Enzymes Name: ______________
___ / 15 marks = Date: _______________
What are enzymes? (1 mark)
( Living things
( Yeast cells
( Proteins that act like catalysts inside the cells
( Chemical substances that act like catalysts in industry
What are proteins made of? (1 mark)
( Long chains of fatty acids
( Long chains of amino acids
( Long chains of sugars
( Long chains of DNA
Enzymes are proteins that⦠(1 mark)
( speed up chemical reactions
( slow down chemical reactions
( are products of chemical reactions (they are formed in chemical reactions)
( are substrates in chemical reactions (they are consumed in chemical reactions)
Whitout enzymes, chemical reactions in living organisms⦠(1 mark)
( will still occur, but they will be too fast to support life
( will occur normally
( will not occur
( will still occur, but they will be too slow to support life
Pepsin is an enzyme that digest proteins and it is found in⦠(1 mark)
( all types of tissues in the body
( in the mouth
( in the brain
( the stomach
Amylase is an enzyme that breaks down (1 mark)
( starch into proteins
( starch into sugars
( starch into DNA
( starch into cells
True or false? Mark the following statements as T (true) or F (false): (10 marks)
( there are many different types of enzymes
( there are hundreds of different enzymes in your cells that control your cellsôactivity and defend them by invasion by acteria and viruses.
( each enzyme has one active site.
( The active site is the groove in the enzyme where the molecules they act on
(substrates) are captured and made to undergo a reaction.
( the substrates are always broken apart to form products
( the substrates...