Test II-Mitosis and Meiosis
1. A person has received a severe body injury due to a puncture wound to their right arm. At
the site of injury, the cell begins to divide rapidly. Using the information given, identify
which phase of the Cell Cycle the dividing cell is participating in.
a.
b.
c.
d.
S phase
G1 phase
G2 phase
M phase
2. Rearrange the steps of Cell division to reflect the correct sequence of events that occur in
the cell.
1.
2.
3.
4.
5.
6.
a.
b.
c.
d.
Metaphase
Cytokinesis
Interphase
Anaphase
Prophase
Telophase
1, 2, 3, 4, 5 ,6
3, 5, 1, 4, 6, 2
6, 5 ,4 ,3 ,2, 1
5 ,3 ,1 ,4 , 6 ,2
3. The picture above represents an animal preparing for cell division. The chromosomes are
lining up in the middle of the cell with their centrioles located on opposite sides. Using the
characteristics provided and the illustration from above, infer the next stage of mitosis.
a. Telophase
b. Anaphase
c. Prophase
d. Metaphase
4. During __________ of Mitosis the chromatin condense into chromosomes.
a.
b.
c.
d.
Interphase
Prophase
Metaphase
Anaphase
5. It is hypothesized that as a cell gains volume and increases in size, the cell will begin to
divide into two new daughter cells. Decide which statement proves this theory to be valid.
a. The DNA is overloaded and the cell requires an effective method to exchange materials
across the cell membrane.
b. The cell needs to divide to produce gametes for sexual reproduction.
c. As the size of the cell increases, cell organelles begin to lose their function.
d. DNA can still be replicate even though the size of the cell increases.
6. At the beginning of meiosis the parent cell contains 84 chromosomes. The product of
meiosis consists of four genetically different haploid cells that contain 42 chromosomes.
Because each daughter cell receives half of each parent’s chromosomes the off springs will
share characteristics of both parents. In order to ensure genetic variability in the daughter
cells, select the correct amount of daughter cells after meiosis is complete?
a. 1
b. 2
c. 3
d. 4
7. Meiosis is associated with __________ reproducing organisms that produce gametes.
a.
b.
c.
d.
Asexually
Sexually
Anasexually
Heterosexually
8. How many chromosomes are found in the human body?
a.
b.
c.
d.
44
45
46
43
9. In this phase of mitosis the sister chromatids have condensed and are now visible. Before
moving into the phase shown above, the sister chromatids were uncondensed and not
replicated. Which phase of the Cell Cycle prepares the cell for mitosis by replicating its
DNA so the cell can begin mitosis?
a.
b.
c.
d.
G1 phase
M phase
S phase
G 2 phase
10. A cell in the lung of a newly admitted patient has begun to grow out of control and will not
stop dividing. As a result of this uncontrollable growth, the patient has been diagnosed
with cancer. Select the best answer that explains the defect in the cell cycle.
a. The cell completed the Cell Cycle with out replicating its DNA.
b. The second growth phase (G2) was too short.
c. The cell stopped responding to the internal and external regulators that regulated the
timing in the cell cycle.
d. The cell completed mitosis twice.
11. Based on what you know about meiosis and heredity, how would you explain cross-over?
Name________________
Period___
Date_____
th
Due on December 17 , 2009
1. Key: Ears (F-dominant, f-recessive), Legs (L-dominant, l-recessive). In llamas, floppy
ears are dominant to pointy ears. Also in llamas, bowlegs are recessive.
2. A llama with floppy ears is crossed with one that has strait ears.
3. Draw a Punnett square showing the resulting offspring
4. Show the ratios of the resulting phenotypes, use fractions.
12. What are the 3 most important differences between Mitosis to Meiosis?
13. Using the pictures provided identify the stages of Mitosis. Name each phase and
provide a brief summary of what is happening during that phase.
SUMMARY
a)
Name________________
Period___
Date_____
th
Due on December 17 , 2009
SUMMARY
b)
SUMMARY
c)
SUMMARY
d)
Name________________
Period___
Date_____
th
Due on December 17 , 2009
14. The drawing above shows a picture of a DNA nucleotide with the h of
the following describes the nitrogen base in this nucleotide?
a. a straight chain
b. a ring structure
c. a branched chain
d. a macromolecule
15. Which of the following best describes the role of RNA molecules that form in the
nucleus when DNA is copied?
a. RNA molecules are messengers that carry the code from the DNA to the
ribosomes.
b. RNA molecules are responsible for the genetic code.
c. RNA molecules attach to ribosomes.
d. RNA molecules determine how an organism looks and acts.
16. If a strand of DNA had bases in the following order—ATCCGTC, what would be
the order of the bases in the other strand of DNA?
a. ATCCGTC
b. GAGGCAT
c. TAGGCAG
d. GCTTACT
17. Which of the following statements is true?
Name________________
Period___
Date_____
th
Due on December 17 , 2009
a. The nitrogen bases that make up the DNA nucleotides of plants are much
different from the bases found in animals.
b. The more closely related two organisms are, the more alike the order of
their DNA nucleotides.
c. Changes in genes do not affect any of the traits of an individual.
d. A given sequence of bases can result in a number of different amino acids.
18. If the template of a strand of DNA is 5 AGATGCATC 3, the complementary
strand will be —
a. 3 TCTACGTAG 5
b. 5 CTACGTAGA 3
c. 3AGATGCATC 5
d. 5 AGACGTCTA 3
19. If a cat has 38 chromosomes in each of its body cells, how many chromosomes
will be in each daughter cell after mitosis?
a. 11
b. 19
c. 38
d. 76
20. In DNA, which of the following determines the traits of an organism?
a. Amount of adenine
b. Number of sugars
c. Sequence of nitrogen bases
d. Strength of hydrogen bonds
21. DNA molecules separate into single strands, which are then used to construct two
identical strands of DNA. This process ensures that the —
a. cytoplasm is in equilibrium
b. mitochondria are genetically identical to the chloroplasts
c. parent cells use little ATP
d. daughter cells are genetically identical to the parent cells
22. Ultraviolet radiation can cause mutations in the DNA of skin cells that have been
overexposed to the sun. This mutated DNA has no effect on future offspring
because —
a. A changes in skin cell DNA are homozygous recessive
b. B mutations must occur within the RNA codons
c. C offspring reject parental skin cells
d. D only changes to gamete DNA can be inherited.
Name________________
Period___
Date_____
th
Due on December 17 , 2009
23. The structures marked 3 in the diagram are responsible for —
a. absorbing oxygen
b. carrying genetic codes
c. lining up amino acids
d. serving as an anticodon
24. Which of these processes does NOT require DNA replication?
a. mitosis
b. cell division
c. meiosis
d. cell growth