UPDATED ACTUAL Exam Questions and
CORRECT Answers
In order for the genetic material to fulfill its role in cells, it much meet which of the following
criteria?
replication
transmission
information
continuity
diversity
variation - CORRECT ANSWER - replication, transmission, information, variation
_____ contain all fo a cell's genetic information and consist of DNA wrapped around specialized
proteins. - CORRECT ANSWER - chromosomes
Telomeres are related to
cellular aging
cellular organization
chromosome compaction
chromosome division - CORRECT ANSWER - cellular aging
How many hydrogen bonds are formed between adenine and thymine in the double DNA helix?
- CORRECT ANSWER - two
What type of synthesis happens on the lagging strand?
,a. synthesized in small fragments that are later connected
b. synthesized continuously - CORRECT ANSWER -A
What type to the leading strand?
a. synthesized in small fragments that are later connected
b. synthesized continuously - CORRECT ANSWER -B
DNA replication is described as _____ because DNA replication proceeds outward from two
replication forks. - CORRECT ANSWER - bidirectional
DNA helicase travels toward the replication fork using energy from ATP in this direction:
3' to 5'
5' to 3' - CORRECT ANSWER - 5' to 3'
Why do eukaryotic cells hav multiple origins of replication?
a. so that both strands of DNA can serve as a template to produce new strands
b. to ensure timely replication of multiple, relatively large chromosomes
c. so that the new strands can meet at the end of the circular chromosomes - CORRECT
ANSWER -b
An ____ of ____ is a site within the chromosome where DNA replication begins. - CORRECT
ANSWER - origin of replication
,The nucleic acids are:
pyrimidines
purines
DNA
RNA - CORRECT ANSWER - DNA and RNA
The proposed models of DNA replication included:
a. dispersive replication
b. partial replication
c. semiconservation replication
d. conservative replication - CORRECT ANSWER - A, C, D
The genome of a bacterial cell is different from that of a eukaryotic cell because the bacterial
genome exists:
a. only in the nucleus
b. in a linear form
c. only in the semi-autonomous organells
d. as a single circular chromosome - CORRECT ANSWER -D
In DNA, adenine always pairs with ____ and cytosine always pairs with ____. - CORRECT
ANSWER - thymine
guanine
Chargaff's experiments showed that the amount of adenine in a sample was the same as the
amount of _____. - CORRECT ANSWER - thymine
, Guanine forms ___ hydrogen bonds with cytosine. - CORRECT ANSWER -3
The DNA strand that can be copied to produce new DNA strands is called the:
a. daughter strand
b. synthesis strand
c. template strand
d. parental strand - CORRECT ANSWER -CD
A nucleosome is composed of ___ wrapped around an octomer of histone proteins.
a. double stranded DNA
b. double stranded RNA
c. single stranded RNA
d. single stranded DNA - CORRECT ANSWER -A
The most important features of DNA replication are:
a. speed
b. completeness
c fidelity
d. mutation - CORRECT ANSWER - A, B, C
The highly compacted regions of chromosomes are referred to as _____. - CORRECT
ANSWER - heterochromatin
These are related to cellular aging: