A species is a group of living things that are very similar and can produce young (offspring) together.
Examples:
All dogs belong to the same species.
All cats belong to another species.
Humans are one species called Homo sapiens.
For example:
Chocolate is not always bad. Eating a small amount can be okay. But eating too much chocolate can cause problems:
Lots of sugar – Too much sugar can lead to tooth cavities and weight gain.
Less healthy food – If you eat a lot of chocolate, you may not feel hungry for healthy foods like fruits and vegetables.
Too much caffeine – Some chocolates contain caffeine, which can make it harder to sleep.
Stomach problems – Eating a lot at once can sometimes cause a stomach ache.
Energy crashes – Sugar gives quick energy, but later you may feel tired.
Chameleons change color using special cells in their skin called chromatophores.
Chameleons have layers of special cells under their skin.
These cells contain different pigments and tiny crystals.
When the chameleon is excited, scared, angry, cold, or trying to communicate, the cells change.
Light reflects differently from the skin, making the chameleon appear different colors.
How do chameleons control the changes? When do they know which colour to camouflage with? Does changing colours have anything to do with mating, do they attract females by changing colours?
Spices are aromatic plant substances (seeds, bark, roots, fruits, or flowers) used to flavor, color, and preserve food.
Some common spices include:
Black Pepper – pungent, widely used
Cinnamon – sweet and warm
Turmeric – earthy, bright yellow
Cumin – nutty and savory
Great question, Ima!
FeatureRed Blood Cells (RBCs) White Blood Cells (WBCs) Main jobCarry oxygenFight germs and infections Colour Red (contains hemoglobin) Colorless /whiteNumberVery manyMuch fewerShapeUsually round and disc-shapedDifferent shapes depending on typeNucleusNo nucleus in humansHave a nucleusLife spanAbout 120 daysDays to years, depending on the type
Carry oxygen from the lungs to the body.
Carry some carbon dioxide back to the lungs.
Contain hemoglobin, which gives blood its red color.
Has a fixed shape and fixed volume
Particles are tightly packed and vibrate in place
Strong intermolecular forces
Ice
Organs” generally refers to specialized body structures made of different tissues that work together to perform specific functions in living organisms.
In humans and many animals, major organs include:
Heart — pumps blood
Lungs — exchange oxygen and carbon dioxide
Brain — controls the nervous system
Liver — processes nutrients and detoxifies substances
The brain is one of the most important organs in the human body.
Helps you think
Stores memories
Controls movement
Helps you learn
Material properties describe how a substance behaves under different conditions, including its mechanical strength, thermal stability, electrical conductivity, and chemical resistance. These properties determine how materials are selected and used in engineering, construction, electronics, and everyday products.
Mechanical properties
Tensile strength, hardness, toughness, elasticity, ductility, fatigue resistance.
Example: Steel has high tensile strength, while rubber is highly elastic.
Thermal properties
Cells are the basic structural and functional units of life.
They carry out essential processes like energy production, protein synthesis, and waste removal.
Examples: muscle cells, nerve cells, blood cells.
Tissues are groups of similar cells working together to perform a specific function.
Human nutrition is the science of how food sustains life, providing energy and essential nutrients for growth, repair, and overall health. It focuses on macronutrients (carbohydrates, proteins, fats) and micronutrients (vitamins, minerals, water), aiming to prevent malnutrition and reduce chronic disease risks.
Questions:
1.Why do they have to study it ?
ANS : Studying human nutrition is essential because it directly impacts health, disease prevention, productivity, and even social and economic development. Without understanding nutrition, societies face higher risks of malnutrition, obesity, chronic illnesses, and reduced quality of life.
What will happen to humans if people don't study human nutrition?
ANS: If people stopped studying human nutrition, the consequences would be serious and far-reaching. Nutrition science is the backbone of public health, disease prevention, and food policy. Without it, humans would face both immediate and long-term risks.
Cells are the building block of life. We are made of cells. Almost every bacteria and fungi are unicellular organisms. Unicellular organisms means one celled organisms. we are multicellular organisms. Multicellular organisms have more than one celled organisms. There are 2 types of cells animal cell and plant cell.
Question
Did unicellular organisms come first on Earth?
ANS: Yes unicellular organisms came first on earth.
The immune system is your body's defence system. It products your body from harmful bacteria and germs. Germs and bacteria is every were, so to fight with the bad germs and bad bacteria.
How it happens:
When a germ enters for the first time
then you get sick but if that same germ enters the body for the 2nd time and all you won't get sick because your immune system knows this.
Human nutrition is the study of how your body takes in food and what is healthy like vegetable so they study how is vegetable good for your body what all nutrients has like that they study also about water to maintain life, support growth, and maintain health it focuses on the essential nutrients that provide energy and structural materials for our tissues. The body requires seven major classes of nutrients, divided into macronutrients and micronutrients.
Macronutrients:
Carbohydrates: The primary energy source for cellular respiration, found in grains and starchy vegetables.
Proteins: Vital for growth and tissue repair, sourced from meat, eggs, and legumes.
Fats : Provide long-term energy storage and insulation.
Water: Critical for chemical reactions and transporting nutrients to cells.
Wagging tail
Wagging tail means the dog is emotionally aroused .
Question
What is meant by emotionally aroused?
Ans: Emotionally aroused means your body and mind are on high alert.
For example: A dog is excited , scared or angry.
In the air there is harmful and deadly microorganisms like fungi, bacteria and virus that can harm you so your body developed a mechanism called the immune system to protect your body. An immune system is not only one part but a combination of tissues, organs ,and cells some of which is lymphatic nodes , limp vessels , lymphocytes , white blood cells , bone marrow, skin ...
That join to protect you and keep you alive . White blood cells, also called leukocytes . Which play an important roll , in the immune system by continuously Scanning tissues and organs for any suspicious signs . as soon as a foreign substance called antigenes cut your first layer of defence which is the skin , and enters our body . It quickly begins to use your vital resources and starts to double up in number with in a few minutes…
DNA short form for deoxyribonuclic acid is a molecules a group of atoms stuck together in the shape of dobble helix. Its the genitic code that Determines all the characterstics that forms living organisms. we are made of 3 billion cell that we can't see, and each cell has a spcefic job. some banch of cells make up our bone some make our brain some make our skin and all together makes our body. DNA tells every cell what to do. DNA is like a blueprint for our body.
The amino acid is an needed chemical inside our body and its often referred to basic bulding block of life. they come in 20 different shapes an kinds of chemicals it stays coiled up inside the nucles which is inside cytoplasm and which is inside the cell.
When blinking hapence you are actully mosturing your eye, eye ball , there is also a layer to protect you from dust so this too. So when you don't blink your eye dust mostureise so your eye , eye ball and the layer will get try. Also when you blink it blocks dust too so when you don't blink dust can pass through which cause eye itches. Also when your eye vanes will break after few hours so when it hapence you eye will start getting red in colour and start burring and itching then if you still hold it like that for some more time then that layer of your eye will break and also if you still keep it for days your brain will forget how to blink so it is better to blink when needed
Elephants belong to the elephantipae family and to the probosicided order. That includes sea cows, elephant and Hyrxes. Elephants can grow up to 13 feet tall and can weigh up to 13,000 pounds. early elephants were very different in there sizes apperance back then compared to what we see of them today. It started with a species known as ''moeitherium'' and were heavily about 3 feet tall . They didn't have trunks like mordern day elephants. Had abroud , flexible upper lip like a tapits for grasping aquatic vegetations. Then came the byatheriume the most important feature that was changed from would be the small tusks That were on the upper and lower jaw. This was changed because the need to be able to have the shearing action to crop plants. Then about 26 millone years ago came the ''numidotherium'' with much slender body shape and not much changed un…
Microorganisms are tiny living things you can’t see with your eyes. Examples include:
Bacteria
Fungi (like yeast)
Some algae
Whales are large marine mammals that live in oceans, breathe air through blowholes, and give birth to live young.
Live in oceans
Breathe air using a blowhole
Are warm-blooded mammals
The Blue whale is the largest animal on Earth, a sea-living mammal that eats tiny krill using baleen plates.
Lives in oceans around the world
Breathes air through a blowhole
Eats krill using baleen plates
The blue whale is the largest animal on Earth, a marine mammal that lives in oceans and feeds on tiny krill using baleen plates.
Lives in oceans all over the world
Breathes air using a blowhole
Eats krill using baleen plates
Size: Can grow up to 30 meters long (about the length of 3 buses!)
Weight: Around 150–200 tons (as heavy as 30 elephants!)
Blue whales live in all the world’s oceans, from cold polar waters to warmer seas.
The play bow is a universal gesture among dogs indicating their desire to play and that their actions are friendly.
Dogs use the play bow to communicate with humans and other animals, often preceding playful behavior.
Owners can mimic a play bow to engage their dogs in play, effectively "speaking" their language.
If you've been around even just a few dogs in your life, you've probably witnessed the play bow. It's a posture that dogs of all ages, breeds, and sizes take when they want to have fun.
A play bow is a form of dog body language. It’s a way in which dogs communicate with people and other animals. Essentially, it's your dog's way of saying, "Let's play!"
Animal communication systems
involve the transfer of information from one individual (the sender) to another (the receiver), often resulting in a change in the receiver's behaviour. These systems are essential for survival, helping animals find food, attract mates, defend territory, and warn others of predators.
Primary Modes of Communication
Animals use various sensory channels to transmit signals:
Acoustic (Sound): Rapid and wide-reaching. Includes vocalizations like bird songs and wolf howls, or non-vocal sounds like a beaver slapping its tail on water.
Visual: Involves gestures, body postures, facial expressions, and coloration. Examples include a peacock fanning its tail or a dog baring its teeth.
The Human skeletal system is the framework of bones inside our body. It gives our body shape, support, and protection.
An adult human has 206 bones in the skeletal system.
The skeletal system has several important jobs:
Support: It holds the body up and gives it shape.
A human organ system is a group of organs that work together to perform a specific function in the body. The human body has many organ systems, and each system helps the body stay alive and function properly.
The skeletal system is made up of bones, cartilage, and joints. An adult human has 206 bones. This system gives shape and support to the body, protects internal organs, and helps in movement by working with muscles. For example, the skull protects the brain and the rib cage protects the heart and lungs
The muscular system is made up of muscles that help the body move. Muscles work together with bones to allow movement such as walking, running, and lifting objects. Muscles also help maintain posture and produce heat in the body.
Plant organs are specialized parts of a plant that perform specific functions. The main plant organs are roots, stems, leaves, flowers, fruits, and seeds. These organs work together to help the plant survive, grow, and reproduce.
Roots are usually found underground and form the plant’s anchoring system. They absorb water and minerals from the soil and transport them to the stem. Some roots also store food for the plant.
Tap root – one thick main root with smaller branches (example: carrot)
The ozone layer is formed naturally in the Stratosphere.
It forms when ultraviolet (UV) rays from the Sun react with oxygen molecules.
Ozone is a gas made of three oxygen atoms (O₃).
The ozone layer helps absorb a large amount of harmful UV radiation.
Some UV rays still pass through the ozone layer and reach Earth.
When UV rays reach our skin, they can affect skin cells.
Adaptation
means special features or behaviors that help animals survive in their habitat.
Habitat = the place where an animal lives.
Animals adapt to:
Get food
Protect themselves
Reproduction
is the process by which living things produce new living things of the same kind.
It is important because it helps living organisms continue their species.
There are two main types:
It means very few of them are left on Earth, so they might become extinct.
Loss of habitat (cutting forests, building cities)
Hunting and poaching
Variation means differences between living things of the same kind.
Example:
All humans are the same species, but we have different:
height
skin colour
Variation means differences.So, variation in species means differences among living things of the same species.
A species is a group of living things that are similar and can have babies together.Example: All humans are one species.
Even in the same species, no two are exactly the same!
Variation means differences.So, variation in species means differences among living things of the same species.
A species is a group of living things that are similar and can have babies together.Example: All humans are one species.
Even in the same species, no two are exactly the same!
In humans
A species is a basic group in living things used by scientists.
Living things of the same species:
Look almost the same
Have the same body parts
Live in similar ways
Can reproduce and have babies together
Energy Resources
Definition:
Energy resources are things from nature that give us energy to do work like lighting, heating, cooking, moving vehicles, and making electricity.
Main Types of Energy Resources
1. Renewable Energy Resources
These do not finish and can be used again and again.
Simple meaning:
Conservation is taking care of nature and resources so they are available for the future.
Examples:
Conserving forests – not cutting too many trees, planting new ones
Conserving water – turning off taps, not wasting water
Conserving electricity – switching off lights and fans when not needed
Ozone Depletion
Ozone depletion means the thinning of the ozone layer in the Earth’s atmosphere.
What is the ozone layer?
It is a protective layer of gas high up in the sky.
It protects us from harmful UV (ultraviolet) rays from the Sun.
What causes ozone depletion?
Pollution:
Definition:
Pollution is when harmful things make air, water, or land dirty and unsafe for living beings.
Types of Pollution
Air pollution – Smoke from vehicles and factories makes the air dirty.
Water pollution – Waste and chemicals pollute rivers, lakes, and seas.
Humans and the Food Chain
A food chain shows how food and energy move from one living thing to another.
Humans are omnivores.
We eat plants (rice, fruits, vegetables) and animals (milk, eggs, fish, meat).
So, humans usually come at the top of the food chain.
Definition
A food chain is a sequence that shows how energy moves from one living thing to another.
It starts with plants and ends with decomposers.
Food Chain Example
Grass → Goat → Lion Fungi
Examples (Plants)
Adaptations:
Thick stem stores water
Spines protect from animals
Leaves reduced to spines (less water loss)
Cell
Definition:
A cell is the smallest living unit of a living organism. All plants and animals are made of cells.
Main points:
Cells are very tiny (you need a microscope to see most of them).
Different cells do different jobs (muscle cells, nerve cells, etc.).
Definition
Plant cells are the basic living units of plants. They have special parts that help plants make food, grow, and stay upright.
Main Points
Plant cells have a cell wall for strength
They contain chloroplasts for photosynthesis
A large vacuole stores cell sap
Microorganisms and Disease:
Microorganisms are very tiny living things that we cannot see with our eyes. Some microorganisms are helpful, but some can cause diseases.
What is a Disease?
A disease is a condition that makes us feel sick or unhealthy.
When harmful microorganisms enter our body, they can cause diseases. These are called pathogens.
Types of Microorganisms that Cause Diseases
Micro-organisms:
Micro-organisms are very tiny living things that we cannot see with our eyes.We can see them only using a microscope.
Examples of micro-organisms:
Bacteria
Fungi
Protozoa
Definition:
Microorganisms are very small living organisms that can be seen only under a microscope.
Where are they found?
Microorganisms are found everywhere:
In air
In water
The cell membrane is a thin, flexible, living layer that surrounds the cell and controls what enters and leaves the cell.
It is also called the plasma membrane
It surrounds the cytoplasm of the cell
It is selectively permeable
Definition:
Reproduction is the ability of living organisms to make more organisms like themselves.
Why is reproduction important?
It prevents living things from becoming extinct
It helps increase the number of organisms
It passes features from parents to children
Living organisms are things that have life. Humans, animals, plants, birds, insects, and microorganisms are all living organisms.
1. They Need Food
All living things need food to get energy.
Plants make their own food.
Animals depend on plants or other animals.
Definition:
Living organisms are beings that grow, reproduce, respond to their environment, and carry out life processes such as nutrition, respiration, and excretion.
Main points
Growth – They increase in size and develop over time.
Reproduction – They can produce offspring (young ones).
Nutrition – They take in food to get energy and build their body.
Definition:
The human body is the structure of a person, made up of many parts and systems that work together to keep us alive.
Main points:
Head – holds the brain, eyes, ears, nose, and mouth.
Neck – connects the head to the body.
Trunk – chest and stomach, protects important organs.
Definition:
Muscles are soft tissues in the body that can contract (shorten) and relax (lengthen) to produce movement, maintain posture, and perform essential functions like pumping blood and moving food in the body.
Interesting points:
Muscles are everywhere: About 40–50% of your body weight comes from muscles!
Muscles can only pull, not push: They work in pairs to move your body.
Fastest muscles: Your eyelid muscles are the fastest—they can blink up to 100 times per minute!
Definition:
Joints are the places where two or more bones meet
they help our body move and bend.
Interesting points:
Joints help us walk, run, jump, and write.
Some joints can move in many directions, like the shoulder.
Definition:
The human skeleton is the hard framework of bones inside our body. It gives shape to our body and supports us.
Main points:
The human skeleton has 206 bones.
It supports the body and gives it shape.
It protects important organs like the brain, heart, and lungs.
A human organ system is a group of organs that work together to perform a particular job and keep our body healthy.
The human body has many organ systems.
Each organ system has a special function.
Definition:
A human organ system is a group of organs that work together to perform a particular job and keep the body healthy.
Main points:
The human body has many organ systems.
Each organ system has a special function.
Definition:
Reproduction is the biological process by which living beings produce new young ones or offspring to continue their species.
Interesting points:
Life continues: Reproduction is the reason all living things exist today.
Two ways to reproduce: Some organisms need only one parent (asexual), while others need two parents (sexual).
Asexual is fast: Single-celled organisms like amoeba can reproduce quickly and make many offspring.
Definition:
A human organ system is a group of organs that work together to perform a particular job and keep the body alive.
Interesting points:
The heart beats about 100,000 times every day.
The brain sends messages faster than a blink of an eye.
The lungs have millions of tiny air sacs called alveoli.
Definition:
Sexual reproduction is making a new living thing using two parents.
Interesting points:
Two Parents Are Needed – Male and female both contribute cells.
Sperm and Egg Join – Fertilization forms a zygote, the first cell of a new life.
Offspring Are Unique – Children are similar but not exactly the same as parents.
Definition:
The human organ system is a group of organs that work together to keep our body healthy and alive.
Interesting points:
The heart works day and night without resting.
The brain controls the whole body, even when we sleep.
We breathe automatically without thinking about it.
Definition:
The human organ system is a group of organs that work together to keep our body alive and health.
Interesting points:
The brain uses energy all the time, even when we are resting.
The heart starts beating before we are born.
The lungs help us laugh, cry, and talk.
Definition:
Reproduction is the process by which living things make new living things of their own kind.
Importance:
It keeps living things from dying out
Helps increase the number of living things
Life continues from generation to generation.
Definition:
A human organ system is a group of organs that work together to perform a special function in our body.
Main points:
Digestive system – Digests food and gives energy.
Respiratory system – Helps us breathe.
Circulatory system – Carries blood and oxygen.
The skeletal system is the framework of bones in our body. It gives our body shape, support, and protection.
Skull – Protects the brain
Spine (Backbone) – Helps us stand straight and bend
Rib Cage – Protects the heart and lungs
A human organ system is a group of organs that work together to do a special job in our body.
Our body has many organ systems.
Each organ system has a different function.
The digestive system digests food.
Digestive system – Digests food and gives energy.
Respiratory system – Helps us breathe.
Circulatory system – Carries blood, oxygen, and nutrients.
Nervous system – Controls thinking and body actions.
Skeletal system – Gives shape and support to the body.
Definition:
An organ system is a group of organs that work together to perform a special function in our body.
The human body has many organ systems.
Each organ system has a specific job.
Digestive system helps in digesting food.
It’s a nice post.
What happens when an organ fails like the kidney? Is there a back up organ which could help?
What all organs are present in the digestive system and respiratory system?
Definition:
Digestive system Helps in digesting food and giving energy to the body.
2. Respiratory system Helps us breathe in oxygen and breathe out carbon dioxide.
3. Circulatory system Helps in carrying blood, oxygen, and nutrients to all parts of the body.
4. Nervous system Helps us think, feel, and control our body actions.
5. Skeletal system Gives shape and support to the body and protects organs.
Definition:
A human organ system is a group of organs that work together to do an important job in our body.
Digestive System
Helps us digest food.
Gives energy to our body.
The root grows under the soil.
It holds the plant firmly in the ground.
It absorbs water and minerals from the soil.
The stem is the main support of the plant.
Particle theory says that everything is made up of tiny particles and these particles behave in certain ways.
Here are the 5 main ideas:
Everything—air, water, solids, liquids, gases—is made of very small particles.
Has a fixed shape
Has a fixed volume
Particles are packed very tightly
Example: Ice, rock, wood, pencil
Vertebrates are animals with a backbone. They are divided into 5 main groups:
Live in water
Have gills to breathe
Body covered with scales
Lay many eggs
Simplest plants — no true roots, stems, or leaves.
They grow mostly in water (fresh or salty).
They make their own food using sunlight water and Carbondioxid(photosynthesis).
Some are green, others can be red or brown.
Examples: Spirogyra, Seaweed, Ulva, Volvox
Investigating Variation
Variation means differences among living things of the same species.For example, all humans are the same species, but we don’t all look the same — we have different heights, hair colors, and eye colors.
To investigate variation, scientists or students can collect data and compare characteristics.
Example investigation: Investigating height in your class
Measure the height of all students in the class.
The nervous system is one of the most important systems in our body. It helps us feel, move, think, and respond to what is happening around us. It acts like the contrl centerol for our whole body.
Brain:
The main control center.
It helps us think, learn, remember, and make decisions.
Meaning:Variation means small difference in a species.
Example: All humans are the same species, but we are differ in skin type, hair colour, height etc.
Cause: Variation happens because of the genes.
Types:
Inherited variantion
Environmental Variation
What are species ?
ANS: Scientist group living organisms in to diffrent kinds , called species .
. A species is a group of organisms that all share the same characterastics .
key word
. classification
. It shows how every type of organism we know of is connected to all the others .
🌿 What Are Species?
Scientists group living organisms into different kinds called species.
A species is a group of organisms that share similar characteristics.
All organisms are connected to one another through classification — it helps scientists understand how living things are related.
🧩 Classification
Classification means sorting living things into groups based on how they are alike.
It helps scientists study and understand the great variety of life on Earth.
Deciding how to classify a new organism can sometimes be difficult.
For example, it’s easy to tell that a jellyfish and a tiger are different species — but some cases are not so simple!
👩🔬 Taxonomists
Taxonomists are scientists who study how living things are classified.
They carefully observe animals and plants to decide which species they belong to.
🔬 Biological Species Concept (BSC)
According to the Biological Species Concept,
Organisms belong to the same species if they can mate and produce offspring that can also reproduce.
If they cannot produce offspring together, they belong to different species.
🧬 Reproductive Isolation
Reproductive isolation means two species cannot reproduce with each other.
This keeps species separate and helps new species evolve over time.
🌱 Introgression (Gene Flow)
Sometimes, offspring from two different species can still mate with one of the parent species.
This process is called introgression.
It allows gene flow (sharing of genetic traits) between two species.
🏞️ Habitat
A habitat is the natural home or environment of a species.
Different species live in different habitats — like forests, oceans, deserts, or grasslands.
People use a lot of energy each day .
. our body use energy for moving , for thinking , for growing and keeping warm .
Energy - is the ability to do work .
Question
From were do we get energy ?
ANS: Well, according to the law of conservation of energy.
Because I had only that much in that topic and it is a small topic in my note I have done more drawings and a digram
We share our earth with million of other organisms .
What is conservation ?
ans: Saving something or someone
Key word
. Ecosystem - al around us is ecosystem.
. Urbanisation - The. process of an ingresing preperation .
Ozone is a gas . There is a layer of ozone high up in the atmosphere. The Ozone layer is about 25 kilometres above the ground.
Keywords:
Radiation - Known as UV - Full form of UV is Ultra Violet rays entering from the Sun.
. Too much UV rays can cause skin cancer.
. Can even harm the single cell organisms like plants and aquatic animals.
. Between the Earth and Sun, there is an invisible pale blue protective shield called Ozone layer.
Pollution happens when people throw waste or pollute the air.
Water Pollution
We throw water in water, so the fishes come and eat, so they die.
What is water pollution?
Ans : Water pollution is dirty water.
Did you know?
Humans and food chain
Key words
. Woolly mammoth
. Mammoth
. Hunter
. Gater
Food chain - Describes how different organisms eat other for survival . The food chain usually starts with a plant and ends with an animal . The food chain comprises of the producers , consumers and decomposers :
Plants - Producers
Animals - consumers
Primary consumers = herbivores or secondary consumers eat other animals .
Secondary consumers - carnivores
If carnivores eats another carnivore , it is called a tertiary consumer , Some animals play both roles like crows . They are called omnivores.
Adaptation - Helps animals to servive aand thrive in wild .
The process of adjusting according to the environment and situation is called adaptation .
Question
How do animals adapt ?
ANS: There types of adaptation process in the animal world , That is : 1. Behairoral 2. Structural and physical
Behaviural adaptation :
Animal cell are suruonded by a semi - permeatain membarain . cell membarain alows only spsific matirial to move in and out of the cell . The diffrent parts of the cell are called organells . The cytoplasm is a jelly like substence . Cytoplasm provides a surface for all the center of the cell . Mitochondria are the sites for cellular respiration in cell. It is the power house for the cells. ATP is needed for the functioning or growth and maintence of the body . The endoplasmic reticulam is a large network of membaraine bounds sheet . They help in transporting and exanchaging materials between the virouse regions of thecytoplasm . The cytoplasm reticulum is two types The smooth endoplasmic riticulume helps in the formantation of lips . The rough endoplasmic reticulum has ribosomes . When the damaged , the lysosome bursts .
List the organelles.
How many organelles are there in the animal, plant, and human cell?
A cell is the smallest unit of life . It’s like a tiny room where all the work happens to keep a living thing alive.Every plant, animal, and human is made up of cells! Types of Cells
There are two main types:
Plant cells
Animal cells
Both are similar, but plant cells have some extra parts!
Organism
Organ system - 11 organe system
Organ - 78 organs
Tissues
cells - 37 trillion - 12 zeros in trillion
11 organ system
Key words
1 . Trillion - A number with 12 0's .
Amoebae - A tiny living organism .
Obtained - Naturally obtained , Chemically obtained , Biologycally obtained , Mechically obtained .
Obtain - To get or to receive something .
Butcher - A person who cuts and sells meat .
Points and questions
Why does a plant need a cell?
Ans: A plant needs cells because they are the fundamental building blocks for all functions providing structure, and enabling process like photosynthesis.
What is photosynthesis?
Ans: The process plants use to convert light energy to chemical energy to produce their own food, sugar, and oxygen.
What is chemical energy?
2 . 5
Points
What is the meaning organisms ?
ANS : Organisms are living things that means they can breath , grow , move , eat , and reproduce .
What is micro ?
ANS : The word 'micro' means very very small .
Mucles are organes that help us to move .
The mucles are atached to our bones.
Tendones are very strong.
And they don't stretch.
Mucles can get shorter .
This is called Contraction
Points
A joint is place where to bones meet.
There are two types of joints one is fixed joints second one is moveble joints.
The skull has fixed joints.
The crianium is made up of sevral bones .
This helps cranium to protect the brain.
The human skeletal system wasn't found by one person.
Yes , bones need blood.
There are 7 cervical vetibrae in almost all humans because They need to support the head
yes , animal organs work together
The name digestive system Came from the word digest
The meaning of respiration is to breath
Chocolate contains glucose (the same energy molecules we gain by eating food like fruits and vegetables), so if chocolate contains glucose isnt chocolate good for our health and essential?