Chapter 9/10 Practice
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. When a cell undergoes mitosis,
|
a. |
the daughter cells have identical genes. |
|
b. |
the daughter cell has genes identical to those of the mother cell that produced it. |
|
c. |
the amount of cytoplasm in the mother cell and in each of the daughter cells is equal. |
|
d. |
there is an exact duplication and division of all of the organelles between daughter cells. |
|
e. |
the daughter cells have identical genes and the daughter cell has genes identical to those of the mother cell that produced it. |
____ 2. Which process is absolutely necessary for sexual reproduction to occur in a life cycle, but is not necessarily required for organisms that only reproduce asexually?
|
a. |
prokaryotic fission |
|
b. |
mitosis |
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c. |
meiosis |
|
d. |
cytokinesis |
|
e. |
karyokinesis |
____ 3. Chromatids that are attached at the centromere are called what kind of chromatids?
|
a. |
mother |
|
b. |
daughter |
|
c. |
sister |
|
d. |
programmed |
|
e. |
either mother or daughter. |
____ 4. Cells with two of each kind of chromosome are described by the term
|
a. |
polyploid. |
|
b. |
diploid. |
|
c. |
triploid. |
|
d. |
haploid. |
|
e. |
tetraploid. |
____ 5. The chromosomes are aligned at the spindle equator during
|
a. |
anaphase. |
|
b. |
metaphase. |
|
c. |
interphase. |
|
d. |
prophase. |
|
e. |
telophase. |
____ 6. The chromatids detach from one another and become visibly separate chromosomes during
|
a. |
anaphase. |
|
b. |
metaphase. |
|
c. |
interphase. |
|
d. |
prophase. |
|
e. |
telophase. |
____ 7. Kinetochore is the name for the
|
a. |
middle of the spindle. |
|
b. |
place where chromatids attach. |
|
c. |
chromatid after it separates from its twin. |
|
d. |
attachment site on chromatids for microtubules. |
|
e. |
centrioles in plant cells. |
____ 8. Different, or alternative, forms of the same gene are called
|
a. |
genetomorphs. |
|
b. |
alleles. |
|
c. |
mutants. |
|
d. |
chromatids. |
|
e. |
homologous. |
____ 9. Copies of chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what kind of chromatids?
|
a. |
mother |
|
b. |
daughter |
|
c. |
sister |
|
d. |
homologous |
____ 10. Crossing over is one of the most important events in meiosis because
|
a. |
it produces new arrays of alleles on chromosomes. |
|
b. |
homologous chromosomes must be separated into different daughter cells. |
|
c. |
the number of chromosomes allotted to each daughter cell must be halved. |
|
d. |
homologous chromatids must be separated into different daughter cells. |
|
e. |
all of these |
____ 11. Which of the following is NOT true of human chromosomes?
|
a. |
The haploid number is 23. |
|
b. |
The diploid number is 46. |
|
c. |
There are 23 pairs of chromosomes. |
|
d. |
Human gametes end up with two of each type of 23 chromosomes. |
|
e. |
Human gametes end up with one of each type of 23 chromosomes. |
____ 12. Which of the following will NOT develop into a gamete?
|
a. |
spermatogonium |
|
b. |
polar bodies |
|
c. |
oocyte |
|
d. |
spermatid |
|
e. |
secondary spermatocyte |
____ 13. Which of the following does NOT produce variation?
|
a. |
crossing over |
|
b. |
random alignment of chromosomes during meiosis |
|
c. |
asexual reproduction |
|
d. |
genetic recombination of alleles |
|
e. |
sexual reproduction |
Short Answer
Mammalian Reproductive System
With reference to the mammalian reproductive system, answer questions 45-47 by using the five items listed below.
I. sperm
II. mature ova
III. primary oocytes
IV. primary spermatocytes
V. zygotes
14. DIF: E
Refer to Mammalian Reproductive System. During fertilization, which two items combine to form a fertilized egg?
15. Refer to Mammalian Reproductive System. Which item or items are the same as a fertilized egg?
|
a. |
II only |
|
b. |
III only |
|
c. |
V only |
|
d. |
II and III |
|
e. |
III and V |
Other
16. Four of the five answers listed below are characteristic of meiosis. Select the exception.
|
a. |
involves two divisions |
|
b. |
reduces the number of chromosomes |
|
c. |
results in producing genetically identical cells |
|
d. |
produces haploid cells |
|
e. |
involves synapsis |
17. Four of the five answers listed below are haploid. Select the exception.
|
a. |
zygote |
|
b. |
meiospore |
|
c. |
egg |
|
d. |
sperm |
|
e. |
gametophyte |
Chapter 9/10 Practice
Answer Section
MULTIPLE CHOICE
1. ANS: E
2. ANS: C
3. ANS: C
4. ANS: B
5. ANS: B
6. ANS: A
7. ANS: D
8. ANS: B
9. ANS: C
10. ANS: A
11. ANS: D
12. ANS: B
13. ANS: C
SHORT ANSWER
14. ANS:
A
|
a. |
I and II |
|
b. |
I and III |
|
c. |
I and IV |
|
d. |
II and IV |
|
e. |
III and IV |
15. ANS:
C
OTHER
16. ANS:
C
17. ANS:
A