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(Biological) Macromolecules

Total questions: 53

Worksheet time: 3605secs

Name
Class
Date
1.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
2.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered denature
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
3.
Which of these is most likely an enzyme?  
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
4.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
5.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
6.

Can a change in pH alter the active site of an enzyme

a)

yes

b)

no

7.
Enzymes are composed of which of the following monomers? 
a)
amino acids
b)
carbohydrates
c)
nucleotides
d)
monosaccharides
8.
What is another name for enzymes?
a)
chemical catalysts
b)
microorganisms
c)
biological catalysts
d)
inorganic catalysts
9.
What is indicated by letter A?
a)
enzyme
b)
product
c)
substrate
d)
active site
10.

What is indicated by letter C?

a)

enzyme

b)

product

c)

substrate

d)

active site

11.

What is indicated by letter B?

a)

enzyme

b)

product

c)

substrate

d)

active site

12.
Enzymes are considered to be 
a)
Lipids
b)
Carbohydrate
c)
Protein
d)
Nucleic Acid
13.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
14.
Each enzyme only has 1 substrate that will fit its active site.  What is this called?
a)
reusablility
b)
denaturation
c)
specificity
d)
fragility
15.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
16.
What happens when enzymes are heated to a high temperature?
a)
The enzymes die.
b)
The shapes of the enzyme are altered or denatured
c)
The enzymes' amino acid sequence changes.
d)
The enzymes remain the same
17.
The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?
a)
Enzymes increase the energy of the reactants.
b)
Enzymes decrease the energy level of the products.
c)
Enzyme decrease the activation energy of the reaction.
d)
Enzymes reverse the direction of the reaction.
18.
Which line represents an enzyme-catalyzed reaction? 
a)
Line 1
b)
Line 2
19.

Trypsin is an enzyme that is secreted into the small intestine to further break down peptides into their amino acids. If trypsin is mixed in with a solution of starch molecules, which of the following is most likely to happen?

a)

Trypsin will break down the starch if the pH is within the optimum range.

b)

Trypsin will break down the starch if the temperature is within the optimum range.

c)

Trypsin will not break down the starch because enzymes are substrate specific.

d)

Trypsin will not breakdown the starch if the solution is not in the small intestine.

20.

In what ways do enzymes help a cell carry out its chemical reactions?

a)

Enzymes lower the amount of reactants needed for the reaction to occur.

b)

Activation energy and the rate of reaction are both increased by enzymes.

c)

Enzymes speed up chemical reactions by lowering the activation energy needed.

d)

Enzymes slow the reaction down by increasing the amount of energy produced.

21.

Lipase is produced by the pancreas to help digest fat. Lipase breaks down the fats into fatty acids.


Identify the substrate in this reaction.

a)

lipase

b)

fats

c)

fatty acids

d)

pancreas

22.

What are the building blocks (or monomers) of carbohydrates?

a)

Nucleotides

b)

Monosaccharides

c)

Amino Acids

d)

Glycerols

23.

Which of the following is the polymer of carbohydrates?

a)

triglycerides

b)

proteins

c)

nucleotides

d)

polysaccharides

24.

Which of the structures below shows a nucleic acid?

a)
b)
c)
d)
25.

Which of the structures below shows a protein?

a)
b)
c)
d)
26.
Nucleotides are monomers of
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
27.
What is the function of nucleic acids?
a)
store genetic information
b)
store energy (long-term)
c)
store energy (short-term)
d)
build skin, hair, nails, muscles
28.
Lipids can be digested into what smaller subunits?
a)
nucleic acids
b)
amino acids
c)
fatty acids
d)
glucose
29.
All organic compounds contain the element
a)
carbon
b)
nitrogen
c)
phosphorus
d)
sulfur
30.
Building blocks of the body, hair , muscles etc.
a)
protein
b)
nucleic acid
c)
lipids
d)
carbohydrates
31.
Enzymes are..
a)
nucleic acids 
b)
carbohydrates 
c)
lipids 
d)
proteins 
32.
Which is an example of a lipid?
a)
Candy
b)
Olive Oil
c)
DNA
d)
Meat
33.
How many sugar units make up polysaccharides?
a)
one
b)
two
c)
more than two
d)
zero
34.
The elements, ____________________, are found in all of the organic compounds.
a)
Carbon, Hydrogen and Oxygen
b)
Carbon, Hydrogen, Oxygen, and Nitrogen
c)
Carbon and Oxygen
d)
Carbon, Hydrogen, and Nitrogen
35.
DNA and RNA are examples of ___________.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
36.
Waxes, oils and fats are examples of ___________.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
37.
What is the primary function of CARBOHYDRATES?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
38.
What is the primary function of PROTEINS?
a)
Source of energy
b)
Long term storage of energy
c)
Transmitting genetic information
d)
Cell processes and cell signaling
39.
Lipids are "hydrophobic" or "water fearing." What does this mean?
a)
Lipids and water do not mix.
b)
Lipids mix well with water.
40.
The fact that lipids are hydrophobic means they are able to...
a)
Create barriers
b)
Build muscle
c)
Speed up reactions
d)
Provide energy
41.
Enzymes are a special type of _______________.
a)
Protein
b)
Carbohydrate
c)
Nucleic Acid
d)
Lipid
42.
The FUNCTION of any macromolecule is determined by its ______________.
a)
structure
b)
pH
c)
strength
d)
dissolvability
43.

DNA and RNA are examples of

a)

Carbohydrates

b)

Lipids

c)

Proteins

d)

Nucleic Acids

44.

Which macromolecule is shown?

a)

lipid

b)

protein

c)

nucleic acid

d)

carbohydrate

45.
During diffusion
a)
substances (things) moves from high to low concentration
b)
water moves when energy is used
c)
large or oddly shaped molecules move across a cell membrane
d)
water moves from high to low concentration
46.
Which way will the water molecules move during osmosis?
a)
Out of the cell, so the cell shrinks.
b)
Out of the cell, so the cell swells.
c)
Into the cell, so the cell shrinks.
d)
Into the cell, so the cell swells.
47.
_______ regulates what enters and leaves a cell.  
a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Cytoplasm
48.
What type of macromolecule is ATP/ADP?
a)
Carbohydrate
b)
Nucleic Acid
c)
Lipid
d)
Protein
49.
Where does the energy for ATP come from? 
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
50.
Which of the following results in the storage of energy in terms of the ATP/ADP cycle?
a)
The breaking of the bond between the 5-carbon sugar and the 1st phosphate group
b)
The addition of a phosphate group
c)
The removal of a phosphate group
d)
The addition of glucose 
51.

The chemical equation for photosynthesis is

a)

Carbon dioxide + Water + Light --> Glucose + Oxygen

b)

Glucose + Carbon Dioxide + Light --> Oxygen + Water

c)

Oxygen + Carbon Dioxide --> Light + Glucose + Water

d)

Light + Carbon Dioxide --> Oxygen + Water + Glucose

52.

A student is collecting the gas given off from a plant in bright sunlight at a temperature of 27°C. The gas being collected is probably ________.

a)

oxygen

b)

carbon dioxide

c)

nitrogen

d)

glucose

53.

After photosynthesis, plants store their energy as _________ .

a)

Water

b)

Carbon Dioxide

c)

Glucose (sugar)

d)

Oxygen

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