biology organism

What is the function of the tissue

A group of similar cells working together to carry a specific function

what is an organ

a group of tissues working together for a specific function

how can you measure the rate of enzymes

time taken for colour to change

time taken for ph to change

Describe the ‘lock and key’ model

substance binds to the active site of _____

shape of active site is complimatry to the substance

smaller molecules are made due to chemical reactions

what factors affect enzyme action

temperature and ph

what does carbonhydrate break into to

carbonhydraes which make simple sugars

what does proteins break into

protease which produce amino acids

what does lipids break down into

lipase which produce glycerol and 3 fatty acids

which enzyme is produces in the stomach

protease

what enzyme is produced into the mouth

amalays

why does bile neutralise stomach acids

bile is an alkaline

what is the test for starch and how does it work

iodine- orange to blue/black

what is the test for sugar and how doe it work

benedict - gently heat - blue to red

what is the test for protein and how does it work

biuret - blue to purple

what is the test for lipids and how does it work

ethanol - shake - cloudy white

what does the right vena cava do

takes in deoxyenated blood into heart

what does the right atrium do

move blood to right ventricle

what does the right ventricle do

push blood into pulmonary artery which pumps out blood to lungs which get oxygenated

what does the left pulmonary vein do

contains oxinated blood which moves to the atrium and pushed does the the ventricle

what does the left ventricle do

push oxinated blood to aorta which leaves the lungs

what do enzymes do

speed up reactions in body