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Flashcards in KS3 Biology Deck (11)
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1

What is osmosis?

The movement of water from a dilute to a more concentrated solution through a selectively permeable membrane

2

What is active transport?

Allows cells to move from an area of low to high concentration against the concentration gradient

3

What is the placenta?

An organ where substances pass between the mother and the fetus' blood. It acts as a barrier. Waste substances can diffuse through

4

What is the equation for aerobic respiration?

Glucose + oxygen = carbon dioxide + water

5

What is the equation for anerobic respiration?

Glucose = lactic acid

6

What is an antigen?

A molecule on the surface of a pathogen recognised by the immune system

7

What is an antibody?

A protein produced by white blood cells that recognises and binds to antigens

8

Carbohydrate enzyme

Carbohydrase
In saliva
Into sugars

9

Protein enzyme

Protease
In stomach
Amino acids

10

Lipids enzyme

Lipase
Small intestine
Fatty acids and glycerol

11

Equation for photosynthesis

CO2 + water = glucose + O2