Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
|
|
|
1.
|
Which
of the structures in Figure 13-2 are composed of RNA? a. | II and
IV | c. | III and
IV | b. | I and
V | d. | III and
V | | | | |
|
|
|
2.
|
Structure III in Figure 13-2 represents a(n) _____. a. | codon | c. | amino
acid | b. | gene | d. | DNA
molecule | | | | |
|
|
|
3.
|
The
process illustrated in Figure 13-2 is called _____. a. | translation | c. | monoploidy | b. | replication | d. | transcription | | | | |
|
|
|
4.
|
The
chromosome abnormality that occurs when part of one chromosome breaks off and is added to a different
chromosome is _____. a. | inversion | c. | translocation | b. | deletion | d. | nondisjunction | | | | |
|
|
|
5.
|
The
pairing of _____ in DNA is the key feature that allows DNA to be copied. a. | nitrogen
bases | c. | chromosomes | b. | codons | d. | nucleotides | | | | |
|
|
|
|
|
|
6.
|
The
diagram labeled Insect A in Figure 13-3 represents the chromosomes taken from the body cell of a
normal female insect. The diagram labeled Insect B represents those taken from the body cell of a
female of the same species but with an abnormal phenotype. The chromosomal alteration seen in Insect
B could have resulted from _____. a. | a frameshift mutation | c. | crossing over | b. | nondisjunction | d. | a point
mutation | | | | |
|
|
|
7.
|
Triploidy is usually _____ in animals. a. | planned | c. | beneficial | b. | rare | d. | normal | | | | |
|
|
|
Table 13-1
| 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. | |
|
|
|
8.
|
Applicants for the first job of the Help Wanted ad in Table 13-1, "Positions
Available," could qualify if they were _____.
|
|
|
9.
|
Applicants for the fourth job of the Help Wanted ad in Table 13-1,
"Supervisor," could qualify if they were _____.
|
|
|
10.
|
Applicants for the second job of the Help Wanted ad in Table 13-1, "Accuracy and
Speed," could qualify if they were _____.
|
|
|
11.
|
Which
series is arranged in order from largest to smallest in size? a. | chromosome,
nucleus, cell, DNA, nucleotide | b. | nucleotide, chromosome, cell, DNA,
nucleus | c. | cell, nucleus, chromosome, DNA,
nucleotide | d. | cell, nucleotide, nucleus, DNA,
chromosome | | |
|
|
|
12.
|
The
condition in which a zygote contains three copies of a particular chromosome as a result of
nondisjunction is called _____. a. | polyploidy | c. | trisomy | b. | monosomy | d. | monoploidy | | | | |
|
|
|
13.
|
The
hereditary information for a particular trait is generally _____. a. | carried from the
nucleus by tRNA to the gamete | b. | coded for by a ribosome located on the
reticulum | c. | controlled by chromosomes located on an
allele | d. | controlled by alleles located on
chromosomes | | |
|
|
|
14.
|
The
process by which a DNA molecule is copied is called _____. a. | translation | c. | replication | b. | mitosis | d. | binary fission | | | | |
|
|
|
15.
|
_____
is a chromosome rearrangement that results in no loss of genetic information from the
chromosome. a. | Inversion | c. | Deletion | b. | Nondisjunction | d. | Translocation | | | | |
|