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Unit 4 Cell Growth and Reproduction
_____ 1.
a.
b.
c.
d.
_____ 2.
a.
b.
c.
d.
_____ 3.
a.
b.
c.
_____ 4.
a.
b.
c.
d.
Meiosis in animals results in the formation of...
4 sperm cells in males and 4 egg cells in females.
1 sperm cell in males and 4 egg cells in females.
4 sperm cells in males and 1 egg cell in females.
1 sperm cell in males and 1 egg cell in females.
The chromosome number is changed from haploid to diploid by the process of...
mitosis.
meiosis I.
meiosis II.
fertilization.
The chromosome number is reduced from diploid to haploid by the process of...
mitosis.
meiosis I.
meiosis II.
Meiosis...
reduces the number of chromosomes in half.
increases the number of chromosomes in each cell.
occurs when the cell is under extreme stress.
is found only in humans.
_____ 5. The diploid number of chromosomes in a human skin cell is 46. The number of
chromosomes in a human gamete is...
a.
b.
c.
d.
_____ 6.
a.
b.
c.
_____ 7.
a.
b.
c.
d.
46.
92.
23.
12.5
As a result of mitosis, each daughter cell...
receives most of the chromosomes from the parent cell.
receives an exact copy of the chromosomes from the parent cell.
donates a chromosome from the parent cell.
Replication of chromosomes occurs during...
G1.
S.
G2.
anaphase.
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_____ 8.
a.
b.
_____ 9.
a.
b.
c.
d.
The fusion of sperm and egg results in a...
daughter cell.
mother cell.
c.
d.
zygote.
gamete.
Gametes are...
end products of mitosis.
special vegetative cells.
end products of meiosis.
found only in animals.
_____ 10. Which of the following would be most closely associated with mitosis?
a.
b.
c.
d.
production of pollen grains in a flowering plant
repair of a cut finger
sexual reproduction of a plant
chromosomes lining up in homologous pairs during metaphase
_____ 11. Which stage of mitosis is represented by the following diagram?
a.
b.
prophase
metaphase
c.
d.
anaphase
telophase
_____ 12. The diagram below shows a cellular process that occurs in organisms.
This process is known as…
a.
b.
c.
d.
nondisjunction.
mitosis.
meiosis.
independent assortment.
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_____ 13. Suppose that with a normal plant, the haploid number of chromosomes is 10. In plant
#1, cytokinesis does not take place after telophase II. In plant #2, meiosis occurs successfully.
How many chromosomes will there be in the zygote if plant #2 fertilizes plant #1?
a.
b.
10
20
c.
d.
30
15
_____ 14. The second meiotic division is essentially a mitotic division except for the fact that the
cells produced are...
a.
b.
haploid.
diploid.
c.
d.
smaller.
larger.
_____ 15. The diagram below shows a process that can occur during meiosis.
The most likely result of this process is…
a.
b.
c.
d.
Crossing-over; a new combination of inheritable traits that can appear in the
offspring.
an inability to pass either of these chromosomes on to offspring.
a loss of genetic information that will produce a genetic disorder in the offspring.
an increase in the chromosome number of the organism in which this process
occurs.
_____ 16. The diagram below represents reproduction of single-celled organisms A, which has a
normal chromosome number of “8”.
In the circles representing offspring 1 and offspring 2, what is the number of chromosomes that
result from the normal asexual reproduction of organism A.
a.
4
c.
16
b.
8
d.
12
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_____ 17. Which phrase best describes a process represented in the diagram below?
a.
b.
c.
d.
a zygote diving by mitosis
a zygote dividing by meiosis
a gamete dividing by mitosis
a gamete dividing by meiosis
_____ 18. If a cell starts with 48 chromosomes, then each gamete produced at the end of the
process will contain _____ chromosomes
a.
12
c.
48
b.
24
d.
96
_____ 19. All BUT ONE statement describes the advantage of meiosis.
a.
Variation is aided by crossing-over which occurs during meiosis
b.
Meiosis ensures daughter cells receive one of each kind of gene and half of the
chromosome number
c.
Meiosis occurs often because it allows growth and repair of body tissues in
multicellular organisms
_____ 20. What is a disadvantage of asexual reproduction?
a.
b.
c.
d.
It leads to the birth of very few offspring at one time
Like genetic information is passed to the offspring, with no genetic variation
It cannot take place until and unless genetic information from two parents is
combined
It does not allow the organisms to survive and reproduce during unfavorable
conditions.
_____ 21. The picture below represents the different stages a cell goes through in its “lifetime.”
Specific genes within the DNA, are called inhibitors, stop the cell cycle in G1 phase. This process
helps to keep the DNA unaltered and the cells dividing at the correct rate. If cells continue
thorugh the cell cycle, uncontrolled, _____ may likely develop
a.
b.
c.
d.
A tumor
Diseases
Extra DNA
Birth defects
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_____ 22. As a cell grows, it
a.
b.
c.
d.
Places more demand on its DNA
Uses up food and oxygen more quickly
Has more trouble moving enough materials across its membrane
All of the above
_____ 23. The structure labeled A in Figure 10-2 is called the
a.
b.
c.
d.
Centromere
Centriole
Sister chromatid
Spindle
_____ 24. The structures labeled B in Figure 10-2 are called
a.
b.
c.
d.
Centromeres
Centrioles
Sister chromatids
Spindles
_____ 25. Which of the following is a phase in the cell cycle?
a.
b.
c.
d.
G1 phase
G2 phase
M phase
All of the above
_____ 26. What is the symbol for diploid?
a.
N
b.
2N
c.
d.
3N
4N
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Multiple Choice
_____/26
Name: _____________________________________
27.-28 (2 points)
Open Ended
_____/4
TOTAL
______/30
29-30. (2 points)
In the space below, explain one difference between spermatagenesis and oogenesis. How are these
processes similar?