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3 functions of the skeleton;
•1. It supports your body

•2. It helps you move.

•3. It protects your soft organs.

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The sperm pass through the , and mix with fluids produced by the . The fluids provide the sperm cells with nutrients. The mixture of sperm and fluids is called semen.

Penis and urethra

to pass urine out of the man's body

to pass semen out of the man's body

The is the tube inside the penis that can carry urine or semen. A ring of muscle makes sure that there is no chance of urine and semen getting mixed up.

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BBC Bitesize - KS3 Biology - Human reproduction - Revision 1

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The sperm pass through the , and mix with fluids produced by the . The fluids provide the sperm cells with nutrients. The mixture of sperm and fluids is called semen. to pass urine out of the man's body to pass semen out of the man's body The is the tube inside the penis that can carry urine or semen.

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Display in the Chemistry Room- with topics and keywords

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Display in the Chemistry Room- with topics and keywords

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The Nucleus holds DNA and controls the cell.
The cytoplasm is where chemical reactions occur.
The cell membrane controls what enters and leaves the cell. (NO PROTECTION)

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When you get bored reading- watch the video.

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GCSE BBC Science Bitesize - Blood Circulation

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Keywords in Bulgarian and English

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You must know the word equation for photosynthesis and how the reactant gets there.

The reactants are mixed together to form the products.

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Xylem transports water and minerals from the soil up the plant.

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Pollination is the transfer of pollen from the anther (male) to the stigma

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Seeds must be spread far from the parent plant so they won't have to compete for sunlight, space, nutrients and water.

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BBC Bitesize - KS3 Biology - Diet - Revision 1

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Learn about the uses of nutrients and what makes a balanced diet with BBC Bitesize KS3 Science.

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You have to know examples and the function of each.

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Biuret Solution is a blue chemical that turns purple when protein is present.

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Iodine is abrown chemical that turns blue/black when starch is present.

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The Alimentary Canal is another term for the digestive system.

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The Digestive System is not covered in the Cambridge book until grade 6 so here is a helpful website with a small quiz at the end

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The food we eat has to be broken down into other substances that our bodies can use. This is called digestion. Without digestion, we could not absorb food into our bodies and use it.

Digestion happens in the digestive system, which begins at the mouth and ends at the anus.

After we swallow, our food passes through these organs in turn:

oesophagus or gullet

stomach

small intestine

large intestine

Different things happen to food as it passes through the digestive system:

food is digested in the mouth, stomach and small intestine

digested food is absorbed into the bloodstream in the small intestine

excess water is absorbed back into the body in the large intestine

any undigested food passes out of the anus as faeces when we go to the toilet

The liver and the pancreas play an important part in digestion. The liver produces bile, which helps the digestion of lipids (fats and oil). The pancreas produces biological catalysts called digestive enzymes which speed up the digestive reactions.

You need to have JavaScript enabled to view this video clip.

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The food we eat has to be broken down into other substances that our bodies can use. This is called digestion. Without digestion, we could not absorb food into our bodies and use it. Digestion happens in the digestive system, which begins at the mouth and ends at the anus.

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Enzymes are difficult, here is a video to help.

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Enzymes are biological catalysts- they speed up food breaking down.

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More Help.

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A plant celss has all of the same structures as the animal cell but with 3 extra pasrts.
The cell wall provides support and gives the shape (NOT PROTECTION)
The chloroplast absorbs sunlight for photosynthesis and contains chlorophyll.
The vacuole contains sap which is an energy store and makes the cell firm.

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You need all 7 process to be considered living. Movement-changing position.
Respiration-releasing energy.
Sensitivity- responding to your surroundings.

Growth-getting bigger.
Reproduction - producing offspring.

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The Menstrual Cycle lasts about 28 days, but it can be slightly less or more than this. The cycle stops while a woman is pregnant. These are the main features of the menstrual cycle:

The start of the cycle, day 1, is when bleeding from the vagina begins. This is caused by the loss of the lining of the uterus, with a little blood. This is called menstruation or having a period.

By the end of about day 5, the loss of blood stops. The lining of the uterus begins to re-grow and an egg cell starts to mature in one of the ovaries.

At about day 14, the mature egg cell is released from the ovary. This is called ovulation

The egg cell travels through the oviduct towards the uterus.

If the egg cell does not meet with a sperm cell in the oviduct, the lining of the uterus begins to break down and the cycle repeats.

Fertilisation occurs in the oviduct.

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This is Your Period in 2 Minutes | Glamour

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•The trachea branches into two bronchi (one to each lung). Cartilage rings in the walls of the trachea help to keep it open and allow flexibility.

•The bronchi split into smaller and smaller tubes called bronchioles. These end in microscopic air sacs called alveoli. There is a muscular diaphragm below the lungs.

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•Diffusion is the process by which molecules move from a high concentration to a low concentration down a concentration gradient.

•Carbon Dioxide diffuses (moves) from a high concentration in the capillary to a low concentration in the lungs.

•Oxygen diffuses (moves) from a high concentration in the lungs to a low concentration in the blood capillary.

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The worst chemicals in cigaettes are:
• Nicotine - is very addictive

•2, Tar- black substance used to build roads- builds up in the lungs and causes cancer

•3, Carbon monoxide – attaches to haemoglobin in red blood cells instead of oxygen. Red blood cells can´t carry as much oxygen.

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A food chain always starts with a producer, which is an organism that makes food. This is usually a green plant, because plants can make their own food by photosynthesis.

A food chain ends with a consumer, which is an animal that eats a plant or another animal. Here is an example of a simple food chain:

grass → cow → human

Take care - the arrow points to the organism that is doing the eating. If you get the arrows the wrong way round, instead of showing that humans eat cows, you are showing that cows eat humans, and that grass eats cows.

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When all the food chains in a habitat are joined up together they form a food web.

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The polar bear

Polar bears are well adapted for survival in the Arctic. They have:

a white appearance, as camouflage from prey on the snow and ice

thick layers of fat and fur, for insulation against the cold

a small surface area to volume ratio, to minimise heat loss

a greasy coat, which sheds water after swimming.

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Ball an socket joint in the shoulder and hip allow movement in all directions.

Hinge Joints only allow movement in one direction. example elbow and knee

Fused Joints allow no movement. example skull.

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Decomposers get their energy from breaking down dead bodies and waste from plants and animals.

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Muscles that work opposite each other.

EXAMPLE- Bicep and tricep in the top of your arm.

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A tendon connects a muscle to be bone.

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Keyword Translation