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CBA 1.3 - Review

Total questions: 57

Worksheet time: 1hrs 24mins

Name
Class
Date
1.
Which biomolecule is made of nucleotides and contain you DNA?
a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
2.
Which biomolecule has sugars and starches?
a)
Lipids
b)
Proteins
c)
Carbohydrates
d)
Nucleic Acid
3.
Which biomolecule functions include enzymes­ which speeds the rate of chemical reactions, structural components in cells, mechanical functions in muscles and cytoskeleton, cell signaling, and immune response; provides structure and helps with chemical reactions 
a)
Protein
b)
Lipids
c)
Carbohydrate
d)
Nucleic Acid
4.

The following monomer has a phosphate group (orange), pentose sugar (blue), and nitrogen base (green). What molecule is this?

a)

nucleic acid (DNA)

b)

monosaccharide

c)

amino acid

d)

nucleotide

5.
Which biomolecule is important source of energy for humans; glucose for human cells, tissues, and organs; provides fiber, sugar, and starches; provides structural support, cell wall, and cell membrane maker?
a)
Nucleic Acid
b)
Lipid
c)
Carbohydrate
d)
Protein
6.
Which biomolecule includes fats, such as triglycerides, oils, waxes, and steroids (cholesterol); insoluble in water; provides energy storage, insulation, part of cell membrane, and hormones 
a)
Nucleic Acid
b)
Lipids
c)
Carbohydrate
d)
Protein
7.
Identify the biomolecule
a)
Carbohydrate
b)
Lipid
c)
Protein
d)
Nucleic Acid
8.
What is the monomer for a protein?
a)
Monosaccharide
b)
Triglyceride
c)
Amino Acid
d)
Nucleotide
9.
This biomolecule would be used for
a)
Building enzymes
b)
Storing energy
c)
Key source of energy
d)
Storing genetic information
10.
Lipids are made up of which of the following?
a)
glycerol and fatty acids tails
b)
glycerol and monolipids
c)
fatty acids and phosolipids
d)
amino acids and nucleotides
11.
What is the monomer of nucleic acids?
a)
Glycerol
b)
Monosaccharides
c)
Amino Acids
d)
Nucleotides
12.

Polymer's split apart to form ________, by __________.

a)

monomers, hydrolysis

b)

monomers, dehydration synthesis

c)

amino acids, hydrolysis

d)

amino acids, dehydration synthesis

13.
Which biomolecule is also known as enzymes?
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
14.
With what 3 letters do enzymes typically end?
a)
-ose
b)
-ase
c)
-ese
d)
-tic
15.
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
16.
Which of these is most likely an enzyme?  
a)
Sucrose
b)
Galactose
c)
Fructose
d)
Amylase
17.
Where do substrates bind on an enzyme?
a)
voltage-gated channels
b)
surface receptor
c)
calcium channels
d)
active site
18.
What is a substance called if it speeds up a chemical reaction?
a)
reusable
b)
catalyst
c)
specific
d)
fragile
19.

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

a)

yes

b)

no

20.
What is another name for enzymes?
a)
chemical catalysts
b)
microorganisms
c)
biological catalysts
d)
inorganic catalysts
21.
What is indicated by letter A?
a)
enzyme
b)
product
c)
substrate
d)
active site
22.

What is indicated by letter C?

a)

enzyme

b)

product

c)

substrate

d)

active site

23.

What is indicated by letter B?

a)

enzyme

b)

product

c)

substrate

d)

active site

24.

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

a)

Yes

b)

No

25.
Which is NOT a function of Protiens?
a)
Chemical reactions of enzymes
b)
Short term energy
c)
Immune responce
d)
cell signaling 
26.

The differences between two molecules include the type of sugar that forms a section of the molecules and the identity of one of the four nitrogenous bases that make up another section of the molecules. These two molecules are —

a)

proteins

b)

lipids

c)

nucleic acids

d)

complex carbohydrates

27.

An advertisement for a health supplement for dogs claims to build lean muscle and strengthen tendons and ligaments, as well as provide energy. Which two biomolecules must the supplement contain to provide these benefits?

a)

Carbohydrates and lipids

b)

Proteins and carbohydrates

c)

Nucleic acids and carbohydrates

d)

Lipids and nucleic acids

28.

Macromolecules which are both hydrophobic and hydrophilic and are a major component of cell membranes are –

a)

polysaccharides

b)

proteins

c)

phospholipids

d)

inorganic

29.

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?

a)

carbohydrate

b)

lipid

c)

nucleic acid

d)

protein

30.

The enzymes that catalyze cellular reactions are macromolecules made of organic compounds composed of carbon, hydrogen, oxygen, and nitrogen. These types of macromolecules are known as

a)

starches

b)

sugars

c)

proteins

d)

fats

31.
Why are enzymes considered reusable?
a)
Enzymes are constantly renewed
b)
Enzymes are made of unusually strong materials.
c)
Enzymes are constantly regenerated by respiration.
d)
Enzymes are not changed when they catalyze a chemical reaction.
32.
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
33.
Enzymes are capable of increasing the rate of a chemical reaction within a living cell.  Enzymes accomplish this through which of the following means?
a)
reducing the number of products   
b)
reducing the activation energy
c)
increasing the temperature of the cell
d)
increasing the concentration of reactants 
34.
Letter D...
a)
active site
b)
enzyme
c)
substrate
d)
products
35.
Letter B...
a)
active site
b)
enzyme
c)
substrate
d)
products
36.
Enzymes provide a site where reactants called substrates can be brought together in an enzyme-catalyzed reaction. The site is called the
a)
enzyme substrate complex.
b)
reaction site.
c)
active site.
d)
lock and key.
37.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
38.

A table of four types of carbohydrates is shown. Which list correctly matches the functions to the types of carbohydrates?

a)

Energy: glycogen and starch

Structure: cellulose and chitin

b)

Energy: cellulose and chitin

Structure: glycogen and starch

c)

Energy: chitin and glycogen

Structure: cellulose and starch

d)

Energy: cellulose and starch

Structure: chitin and glycogen

39.

Transmembrane proteins span the width of cell membranes. Four types of transmembrane proteins are shown in the section of cell membrane. Although these proteins have different specific functions, they all -

a)

stop chemical reactions within the cell

b)

synthesize molecules that signal other cells

c)

help the cell interact with its external environment

d)

remove large waste particles from the cytosplasm of the cell

40.

Two biomolecules are shown. Which of the following best describes these biomolecules?

a)

molecule X and molecule Y are both carbohydrates

b)

molecule X is a nucleic acid, and molecule Y is a carbohydrate

c)

molecule X and molecule Y are both nucleic acids

d)

molecule X is a carbohydrate, and molecule Y is a nucleic acid

41.

Proteins and carbohydrates have many functions in the body of an organism. Specific proteins and carbohydrates perform specific tasks. Information about a protein and a carbohydrate is given below. How are Ferritin and Glycogen similar in their primary functions for an organism?

a)

both store materials needed by the organism

b)

both store energy used by the organism

c)

both support the structure of the organism

d)

both store information for the organism

42.

The complex carbohydrates pictured below are made by linking molecules of glucose. In all three complex carbohydrates, the subunits of glucose are bonded together differently. Because they have different structures, they most likely -

a)

contain different chemical elements

b)

form different proteins

c)

carry different nucleotides

d)

perform different functions

43.

A student preparing for a hike wants to pack a snack that has biomolceules that provide quickly available energy but few excess calories. Which nutrition label lists the best combination of biomolecules that provide quickly available energy while providing the fewest calories from other types of biomolecules?

a)
b)
c)
d)
44.

Carbohydrates are more easily metabolized than lipids. However, on a gram-for-gram basis lipids provide cells with more -

a)

nitrogen

b)

proteins

c)

structure

d)

energy

45.

Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides?

a)

only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine

b)

only proteins are formed from amino acids joined by peptide bonds

c)

only polysaccharides can be folded and twisted to very specific shapes

d)

only proteins can be large molecules with thousands of subunits

46.

Which of these best represents a fatty-acid molecule?

a)
b)
c)
d)
47.

What is the function of proteins?

a)

provides quick energy

b)

stores energy

c)

helps with growth and repair of tissues

d)

stores genetic information

48.
Which biomolecule is this a picture of?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
49.

A _________ reaction removes a molecule of water to bond molecules together to create a polymer.

a)

hydrolysis

b)

water

c)

dehydration synthesis

d)

magical

50.

How many monomers are in this polymer?

a)

1

b)

5

c)

116

d)

90

51.

Which type of reaction will join monomers together (creating a polymer)?

a)

dehydration synthesis

b)

hydrolysis

52.
Which biomolecule turns iodine solution black?
a)
complex carbohydrate (polysaccharide)
b)
protein
c)
simple carbohydrate (monosaccharide)
d)
lipid
53.
Which reagent is used to test for complex carbohydrates (polysaccharides)?
a)
iodine solution
b)
biuret solution
c)
Benedict's solution
d)
Sudan III solution
54.
Which biomolecule does Benedict's solution test for?
a)
simple carbohydrate (monosaccharides)
b)
complex carbohydrates (polysaccharides)
c)
proteins
d)
lipids
55.
Which reagent is used to test for lipids?
a)
iodine solution
b)
Benedict's solution
c)
Biuret solution
d)
Sudan III solution
56.
Which reagent is used to test for simple carbohydrates (monosaccharides)?
a)
iodine solution
b)
Benedict's solution
c)
Biuret solution
d)
Sudan III solution
57.
Which reagent is used to test for proteins?
a)
iodine solution
b)
Benedict's solution
c)
Biuret solution
d)
Sudan III solution

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