Transcript Quick Quiz1

Question 1
Which of the following biological molecules
contain peptide bonds?
a.
b.
c.
d.
Proteins
Carbohydrates
Lipids
Nucleic Acids
Question 2
What is the function of chaperonin proteins?
a.
b.
c.
d.
e.
Denaturation of polypeptides
Assembling amino acids
Regulation of gene expression
Folding proteins
None of the above
Question 3
Which amino acid is responsible for the
formation of disulfide bonds?
a.
b.
c.
d.
e.
Alanine
Proline
Tyrosine
Cysteine
Guanine
Question 4
The addition of water to break a chemical bond
is termed –
a.
b.
c.
d.
e.
Dehydration synthesis
Hydrolysis
Condensation
Catabolism
Disassociation
Question 5
Which lipid forms membranes?
a.
b.
c.
d.
e.
Triglycerides
Steroids
Phospholipids
Terpenes
Saturated fates
Question 6
Which of the following is not a function of
proteins?
a.
b.
c.
d.
e.
Coding for polypeptides
Catalyzes chemical reactions
Transport of material
Structural components of tissues
All of the above are protein functions
Question 7
The 2 strands of DNA are covalently bonded
together. These bonds are called
phosphodiester bonds.
a. This is true
b. This is false
Question 8
Which of the following is not part of a
nucleotide?
a.
b.
c.
d.
5 carbon sugar
Phosphate group
Fatty acid chain
Nitrogenous base
Question 9
The energy in lipids is stored in the C-H bonds.
a. This is true
b. This is false
Question 10
Which of the following is an amino group?
a.
b.
c.
d.
e.
-OH
-C=O
-COOH
-SH
-NH2
Question 11
Dehydration synthesis –
a.
b.
c.
d.
e.
Is used to link monomers
Removes water to form bonds
Is involved in protein synthesis
Can form disaccharides
All of the above
Question 12
Lincosamides are a class of antibiotics that
inhibit peptide bond formation. What type of
biological molecule would be affected?
a.
b.
c.
d.
Lipids
Proteins
Nucleic Acids
Carbohydrates
Question 13
If a chromosome contains 20% thymine, how
much guanine should it have?
a.
b.
c.
d.
10%
20%
30%
40%
Question 14
A person is lactose intolerant. What type of
molecule is lactose?
a.
b.
c.
d.
Monosaccharide
Disaccharide
Oligosaccharide
Polysaccharide
Question 15
The alpha-toxin produced by the bacterium that
cause gas gangrene is a phospholipidase
enzyme. How does this toxin kill cells?
a.
b.
c.
d.
e.
Disruption of protein synthesis
Prevention of DNA replication
Breaking down the plasma membrane
Blocking nutrient absorption
Stopping biochemical pathways
Question 16
What happens when a lipid is hydrogenated?
a.
b.
c.
d.
e.
Hydrogen is added to the fatty acid chains
The melting point is raised
The lipid is converted into a saturated fat
The fatty acid chain is straightened
All of the above
Question 17
You worked at a fish hatchery and wanted to
set up an experiment to deliver the female
sex hormone, estrogen, to some fish. What
type of molecule is estrogen?
a.
b.
c.
d.
e.
Triglyceride
Polypeptide
Steroid
Terpene
Disaccharide
Question 18
If a strand of DNA has a sequence
5’-ATCCTAG-3’, what would be the
complementary sequence?
a.
b.
c.
d.
5’-CGAAGAT-3’
5’-TAGGATC-3’
3’-TAGGATC-5’
3’-CGAAGTC-5’
Question 19
If a cell was grown in a growth medium that has
a radioactive sulfur isotope which class of
biomolecules will show the presence of the
isotope?
a.
b.
c.
d.
Nucleic acids
Carbohydrates
Lipids
Proteins
Answer Key
1. A
2. D
3. D
4. B
5. C
6. A
7. B (False)
8. C
9. A (True)
10.E
11.
12.
13.
14.
15.
16.
17.
18.
19.
E
B
C
B
C
E
C
C
D