enzymes grade 7

what do enzymes do?

• break down large food pieces to smaller pieces

• reacts with food

• break down large nutrient molecules to smaller,simpler molecules

• make things easy

what are catalysts?

• a substance that helps speed up reactions

• a substance that reacts and speeds up reactions

• a substance that helps slow down reactions

• a substance that cats like

starch is broken down to sugar with what as the catalyst?

• teeth

• amylase enzyme

• lipase enzyme

• water

enzymes are ____________

• chemical catalysts

• reactants in a reaction

• substances that slow down reactions

• biological catalysts

proteins are broken down by protease to

salivary amylase breaks down ____________ and is found in _______________

• sugar, stomach

• starch,stomach

• sugar, mouth

• starch, mouth

bile emuslifies fats, that is it breaks large fat droplets to smaller fat droplets. what breaks down fat molecules?

• protease enzyme

• lipids

• lipase enzyme

• bile

lipids/fats is broken down by lipase to

• 3 fatty acids molecules and 1 glycerol molecules

• amino acid

• simple sugars

• 1 fatty acids molecules and 3 glycerol molecules