Bio 6A/C - DNA Components and Changes/Mutations (Part I - Ch. 6 HOLT Biology)
Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
The
chromosome of a bacterium a. | is wrapped around proteins. | b. | has a circular
shape. | c. | occurs in multiple pairs within the
cell. | d. | is found within the nucleus. | | |
|
|
|
2.
|
In a
bacterium, cell division takes place when a. | its nucleus divides. | b. | the cell splits
into two cells, one of which receives all of the DNA. | c. | the DNA is
copied, a new cell wall forms between the DNA copies, and the cell splits into two
cells. | d. | None of the above | | |
|
|
|
3.
|
Chromatids are a. | dense patches within the nucleus. | b. | bacterial
chromosomes. | c. | joined strands of duplicated genetic
material. | d. | prokaryotic nuclei. | | |
|
|
|
4.
|
Normal human males develop from fertilized eggs containing which of the following sex
chromosome combinations?
|
|
|
5.
|
In
humans, the male determines the sex of the child because males have a. | two X
chromosomes. | c. | two Y
chromosomes. | b. | one X and one Y chromosome. | d. | 46 chromosomes. | | | | |
|
|
|
6.
|
female : XX :: a. | female : gametes | c. | male : YY | b. | female :
eggs | d. | male :
XY | | | | |
|
|
|
7.
|
diploid : somatic cell :: haploid : a. | body
cell | c. | gamete | b. | chromosome | d. | zygote | | | | |
|
|
|
8.
|
A
mutation caused by a piece of DNA breaking away from its chromosome and becoming attached to a
nonhomologous chromosome is called a. | deletion. | c. | inversion. | b. | duplication. | d. | translocation. | | | | |
|
|
|
9.
|
The
stage of the cell cycle that occupies most of the cell’s life is
|
|
|
10.
|
The
synthesis (S) phase is characterized by a. | DNA replication. | b. | cell
division. | c. | replication of mitochondria and other
organelles. | d. | the division of cytoplasm. | | |
|
|
|
11.
|
Mitosis is the process by which a. | microtubules are assembled. | b. | cytoplasm is
divided. | c. | the nucleus is divided into two
nuclei. | d. | the cell rests. | | |
|
|
|
12.
|
cell
growth : G1 :: a. | mitosis : C | c. | mitochondria replication : S | b. | mitosis :
meiosis | d. | DNA copying :
S | | | | |
|
|
|
13.
|
metaphase : prophase :: a. | G1 : M | c. | M : C | b. | G2 :
S | d. | autotroph :
producer | | | | |
|
|
|
14.
|
At
the DNA synthesis (G2) checkpoint, DNA replication is checked by a. | receptor
proteins. | c. | repair
enzymes. | b. | electron transport chains. | d. | cell surface markers. | | | | |
|
|
|
15.
|
In
eukaryotes, the cell cycle is controlled by a. | proteins. | c. | lipids. | b. | carbohydrates. | d. | fats. | | | | |
|
|
|
|
|
|
16.
|
Refer
to the illustration above. The cell in diagram 1 is in a. | metaphase. | c. | anaphase. | b. | telophase. | d. | prophase. | | | | |
|
|
|
17.
|
Refer
to the illustration above. Mitosis begins with the stage shown in diagram
|
|
|
18.
|
Refer
to the illustration above. The cell shown in diagram 5 is in a. | metaphase. | c. | anaphase. | b. | telophase. | d. | prophase. | | | | |
|
|
|
|
|
|
19.
|
Refer
to the illustration above. During which stage do the centromeres divide?
|
|
|
20.
|
5
steps: the cell cycle :: a. | 6 steps : prophase | c. | 3 steps : meiosis | b. | 9 steps :
cytokinesis | d. | 4 steps :
mitosis | | | | |
|