Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
Help
Wanted | Positions
Available in the genetics industry. Hundreds of entry-level openings for tireless workers. No
previous experience necessary. Must be able to transcribe code in a nuclear environment. The ability
to work in close association with ribosomes is a must. | Accuracy and Speed vital for this job in the field of translation. Applicants
must demonstrate skills in transporting and positioning amino acids. Salary commensurate with
experience. | Executive
Position available. Must be able to maintain genetic continuity through replication and control
cellular activity by regulation of enzyme production. Limited number of openings. All
benefits. | Supervisor of production of proteins—all
shifts. Must be able to follow exact directions from double-stranded template. Travel from nucleus to
the cytoplasm is additional job benefit. | |
Table
11-1
|
|
|
1.
|
Applicants for the fourth job of the Help Wanted ad in Table 11-1,
"Supervisor," could qualify if they were _____.
|
|
|
2.
|
Applicants for the third job of the Help Wanted ad in Table 11-1, "Executive
Position," could qualify if they were _____.
|
|
|
3.
|
Applicants for the second job of the Help Wanted ad in Table 11-1, "Accuracy and
Speed," could qualify if they were _____.
|
|
|
4.
|
The
backbone of a DNA molecule is made of which two components? a. | phosphate
molecules and ribose sugars | b. | deoxyphosphate molecules and ribose
sugars | c. | phosphate molecules and deoxyribose
sugars | d. | deoxyphosphate molecules and deoxyribose
sugars | | |
|
|
|
5.
|
Watson and Crick were the first to suggest that DNA is _____. a. | a short
molecule | c. | a protein
molecule | b. | the shape of a double helix | d. | the genetic material | | | | |
|
|
|
6.
|
The
chromosome abnormality that occurs when part of one chromosome breaks off and is added to a
different chromosome is _____. a. | deletion | c. | translocation | b. | nondisjunction | d. | inversion | | | | |
|
|
|
7.
|
Which
of the following would be least likely to happen as a result of a mutation in a
person's skin cells? a. | skin cancer | b. | reduced
functioning of the skin cell | c. | no change in functioning of the skin
cell | d. | the person's
offspring have mutated skin | | |
|
|
|
8.
|
The
pairing of _____ in DNA is the key feature that allows for replication. a. | nucleotides | c. | chromosomes | b. | nitrogen bases | d. | codons | | | | |
|
|
|
9.
|
Messenger RNA is formed in the process of _____. a. | transcription | c. | replication | b. | translation | d. | mutation | | | | |
|
|
|
10.
|
An
RNA molecule is a polymer composed of subunits known as _____. a. | polysaccharides | c. | nucleotides | b. | ribose molecules | d. | uracil molecules | | | | |
|
|
|
11.
|
X
rays, ultraviolet light, and radioactive substances that can change the chemical nature of DNA
are classified as _____. a. | growth regulators | c. | hydrolytic enzymes | b. | metamorphic
molecules | d. | mutagens | | | | |
|
|
|
Figure 11-1
|
|
|
12.
|
The
process illustrated in Figure 11-1 is called _____. a. | translation | c. | monoploidy | b. | replication | d. | transcription | | | | |
|
|
|
Figure 11-3
|
|
|
13.
|
Which
structure shown in Figure 11-3 is a pyrimidine?
|
|
|
14.
|
Which
structure shown in Figure 11-3 does not contain a nitrogenous base?
|
|
|
15.
|
Which
structure shown in Figure 11-3 would attract a free cytosine nucleotide?
|
|
|
Figure 11-4
|
|
|
16.
|
What
type of mutation has occurred in Figure 11-4? a. | point mutation | c. | lethal | b. | frame
shift | d. | protein | | | | |
|
|
|
17.
|
What
will be the result of the mutation in Figure 11-4? a. | it will have no
affect on protein function | b. | only one amino acid will change | c. | nearly every
amino acid in the protein will be changed | d. | the organism will die | | |
|
Completion
Complete each sentence or statement using the word
bank provided below:
mRNA cytosine
point mutation tRNA
replication single stranded
chromosomal mutation codon
translation nitrogen bases
frame shift muataion inversion
mutation
|
|
|
18.
|
When
parts of chromosomes are broken off and lost during mitosis or meiosis, the result is a(n)
____________________.
|
|
|
19.
|
The
process of converting RNA code into an amino acid sequence is called
____________________.
|
|
|
20.
|
A
change in a single base pair of the DNA molecule that affects the synthesis of an entire protein is
called a(n) ____________________.
|
|
|
21.
|
The
molecule ____________________ brings amino acids to the ribosomes for the assembly of
proteins.
|
|
|
22.
|
Each
set of three nitrogen bases representing an amino acid is referred to as a(n)
____________________.
|
|
|
23.
|
The
process by which DNA makes a copy of itself is called ____________________.
|
|
|
24.
|
Thymine, adenine, guanine, and cytosine are classified as
____________________.
|
|
|
25.
|
A(n)
____________________ involves the addition or deletion of a single base in a DNA
molecule.
|
|
|
26.
|
During the process of transcription, DNA serves as the template for making
____________________, which leaves the nucleus and travels to the ribosomes.
|
|
|
27.
|
DNA
is to RNA as double stranded is to ____________________.
|
|
|
28.
|
Adenine is to thymine as guanine is to ____________________.
|
|
|
29.
|
Write
the complemenatry strand of DNA for the given sequence: A T G C T T A G C C
A
|
|
|
30.
|
Write
the complementray sequence of mRNA for the DNA sequence: T A C T A G C C
A
|