KS3 Biology Flashcards
What is osmosis?
The movement of water from a dilute to a more concentrated solution through a selectively permeable membrane
What is active transport?
Allows cells to move from an area of low to high concentration against the concentration gradient
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
What is the equation for aerobic respiration?
Glucose + oxygen = carbon dioxide + water
What is the equation for anerobic respiration?
Glucose = lactic acid
What is an antigen?
A molecule on the surface of a pathogen recognised by the immune system
What is an antibody?
A protein produced by white blood cells that recognises and binds to antigens
Carbohydrate enzyme
Carbohydrase
In saliva
Into sugars
Protein enzyme
Protease
In stomach
Amino acids
Lipids enzyme
Lipase
Small intestine
Fatty acids and glycerol
Equation for photosynthesis
CO2 + water = glucose + O2
