Free Printable Enzymes

Worksheets

Enzymes

Total questions: 21

Worksheet time: 36mins

Name

Class

Date

Are enzymes used up in chemical reactions?

Yes, they can not be used again for another reaction

No, they can be used again in another reaction

Which letter represents the enzyme?

Which letter represents the substrate?

Which letter represents the Product ?

Enzymes are "Specific", which best describes this?

function best under certain environmental conditions

speeds up only one type of reaction.

can catalyze the same reaction over and over again.

Enzymes are "Sensitive" which best describes this?

function best under certain environmental conditions

speeds up only one type of reaction. (Like a lock and key!!!) Example: Amylase – only breaks down starches.

can catalyze the same reaction over and over again.

Enzymes are considered to be

Lipids

Carbohydrate

Proteins

Nucleic Acid

What is the purpose of an enzyme?

give permission for the reaction

raise activation energy

speed up reactions

control how many reactions occur

Where do substrates bind on an enzyme?

voltage-gated channels

surface receptor

calcium channels

active site

10.

What is a substance called if it speeds up a chemical reaction?

reusable

catalyst

specific

fragile

11.

What 3 letters do enzymes typically end in?

-ose

-ase

-ese

-tic

12.

What is the name for the mechanism of enzyme activity?

Lock and key

jigsaw puzzle

hammer and nail

two hands pattern

13.

The "lock and key hypothesis" attempts to explain the mechanism of?

Vacuole formation

Pinocytosis

Sharing of electrons

Enzyme specificity

14.

Which of the following conclusions can be drawn from this graph?

The optimum pH of the enzyme is 6.6.

The optimum pH of the enzyme is 5.8

The enzyme’s activity increases as pH increases 5.0 to 9.0

The enzyme’s activity is greater around pH of 8.0 .

15.

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

Enzymes increase the energy of the reactants.

Enzymes decrease the energy level of the products.

Enzyme decrease the activation energy of the reaction.

Enzymes reverse the direction of the reaction.

16.

Enzymes need certain environmental conditions in order to function properly. What happens when enzymes are heated to a high temperature?

they die

they denature

they change their amino acid sequence

they work better

17.

What makes an enzyme substrate specific?

Size

Shape

Name

Location it is found in

18.

Which substrate would this enzyme catalyze?

∅

19.

What factors affect an enzyme's reaction rate?

temperature

substrate concentration

all of these

20.

Which of these is most likely an enzyme?

Sucrose

Saccharide

Fructose

Amylase

21.