ch03
Student: ___________________________________________________________________________
1.
In prokaryotic cells
____ genetic information is contained within a nucleoid region.
____ genetic material is organized as a single circular chromosome.
____ membrane bound organelles are found in the cytoplasm.
____ a cell wall surrounds the plasma membrane.
2.
Organelles are __________.
A. structures that contain the genetic material.
B. membrane-bound compartments of eukaryotic cells.
C. the region that contains the DNA in prokaryotic cells.
D. the outer, rigid covering of a prokaryotic cell.
3.
A karyotype is a(n) __________.
A. organelle of eukaryotic cells.
B. stage of prophase I in meiosis.
C. division of the cytoplasmic material following mitosis.
D. organized representation of the chromosomes within a cell.
E. None of the answers are correct
4.
You are performing a karyotype for the first time and you forget to add the colchicine. How do you
predict this will affect your karyotype?
A. No affect - your karyotype will look normal.
B. You will be unable to see any chromosomes under the microscope.
C. You will only be able to see one of each chromosome.
D The chromosomes in some cells will look normal (highly compacted) but in other cells distinct
. chromosomes will be hard to identify.
5.
During sexual reproduction, each parent contributes one set of chromosomes. Members of a pair of
chromosomes (one from each parent) are called __________.
A. karyotypes
B. sister chromatids
C. homologs
D. sex chromosomes
6.
Which of the following would contain genetic material that is 100% identical?
A. Homologous chromosomes
B. Sister chromatids
C. X and Y chromosomes
D. All of the answers are identical
7.
You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids would this
cell have in G2 phase?
A. 7
B. 14
C. 28
D. 56
8.
You are studying a diploid organism that has 14 sets of chromosomes. How many chromosomes will a
gamete from this organism have?
A. 7
B. 14
C. 28
D. 56
9.
You are studying a diploid organism that has 14 sets of chromosomes. How many chromatids will a cell
from this organism have in metaphase of meiosis II?
A. 7
B. 14
C. 28
D. 56
10. The location of a gene on a chromosome is called its _____________.
A. karyotype
B. allele
C. locus
D. homolog
11. Cell division in prokaryotic cells is called ________, while in eukaryotic cells it is called ________.
A. binary fission ; binary fission
B. binary fission ; mitosis
C. meiosis ; mitosis
D. mitosis ; binary fission
12. During this phase of the cell cycle, the sister chromatids are formed:
A. G1 phase
B. G2 phase
C. S phase
D. Prophase
E. Cytokinesis
13. During this phase of the cell cycle chromosomes start to condense:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
14. During this phase of the cell cycle sister chromatids separate and head towards opposite poles of the
cell:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
15. During this phase of the cell cycle the chromosomes line up in the center of the cell:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
16. During this phase of the cell cycle the nuclear membrane starts to disassociate:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
17. During this phase of the cell cycle the nuclear membrane reforms around the chromosomes:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
18. During this phase of the cell cycle the microtubules of the spindle fiber attach to the kinetochore:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
19. During this phase of the cell cycle the separated sister chromatids are considered independent
chromosomes:
A. Metaphase
B. Prometaphase
C. Telophase
D. Anaphase
E. Prophase
20. Which of the following indicates the correct order of these events?
A.
B.
C.
D.
Anaphase - Telophase - Prophase - Prometaphase - Metaphase
Telophase - Prometaphase - Prophase - Metaphase - Anaphase
Metaphase - Prometaphase - Prophase - Anaphase - Telophase
Prophase - Prometaphase - Metaphase - Anaphase - Telophase
21. In animals, somatic cells are ________ and germ cells are __________.
A. diploid ; diploid
B. diploid ; haploid
C. haploid ; diploid
D. haploid ; haploid
22. If the gametes of an organism are different morphologically, they are said to be __________.
A. isogamous
B. heterogamous
C. diploid
D. haploid
23. The general purpose of the synaptonemal complex is to __________.
A. provide a link between homologous chromosomes in meiosis.
B. enable the reformation of the cell wall during cytokinesis.
C. separate the sister chromatids during anaphase.
D. independently assort the chromosomes during metaphase of meiosis.
E. None of the answers are correct.
24.
What occurs during leptotene of prophase I?
A. The homologous chromosomes recognize one another by synapsis.
B. Crossing over occurs.
C. The replicated chromosomes condense.
D. The synaptonemal complex dissociates.
E. None of the answers are correct.
25. A bivalent contains how many chromatids?
A. 2
B. 4
C. 8
D. Depends on the cell
26. The process of crossing over occurs during which phase of meiosis?
A. Diakinesis
B. Diplotene
C. Pachytene
D. Zygotene
E. Leptotene
27. What represents the correct order of events during prophase I?
A. Pachytene - diplotene - diakinesis - leptotene - zygotene
B. Leptotene - zygotene - pachytene - diplotene - diakinesis
C. Zygotene - leptotene - pachytene - diakinesis - diplotene
D. Diplotene - pachytene - leptotene - diakinesis - zygotene
28. The physical structure that is formed when two chromatids cross over is called a(n) _______.
A. synaptonemal complex
B. bivalent
C. karyotype
D. chiasma
29. If an organism has five pairs of chromosomes, how many chromosomal combinations are possible at
metaphase I of meiosis?
A. 52
B. 105
C. 510
D. 25
E. None of the answers are correct
30. The end result of meiosis in animals is ______.
A. two diploid cells
B. two haploid cells
C. four diploid cells
D. four haploid cells
E. None of the answers are correct
31. Oogenesis is a gametogenic process following ________ that produces _______.
A. binary fission ; sperm cells
B. mitosis ; egg cells
C. meiosis ; egg cells
D. meiosis ; sperm cells
E. mitosis ; sperm cells
32. In plants, the haploid generation is called the ______ and the diploid generation is called the
__________.
A. sporophyte ; spermatogenesis
B. gametophyte ; sporophyte
C. sporophyte ; gametophyte
D. oogenesis ; gametophyte
33. In plants, spores are produced by the process of __________.
A. spermatogenesis
B. meiosis
C. mitosis
D. binary fission
E. oogenesis
34. A pollen grain in a plant represents the ________.
A. male gametophyte
B. female gametophyte
C. male sporophyte
D. female sporophyte
35. In a plant, which of the following is triploid (3n)?
A. Pollen grain
B. Embryo sac
C. Seed
D. Endosperm
E. None of the answers are triploid
36.
Which microtubule type is paired to its correct function?
A.
Polar microtubules - positioning of the spindle apparatus
B. Aster microtubules - positioning of the spindle apparatus
C.
Kinetochore microtubules - separate the poles
D.
Polar microtubules - bind kinetochore to centromere
37. The chromosomal theory of inheritance was first proposed by ___________.
A. Mendel
B. Boveri and Sutton
C. Darwin and Mendel
D. Weismann and Boveri
38. In a species of turtles you are studying, you find that when eggs are incubated at a low temperature,
the hatched turtle will be male. Eggs incubated at a high temperature yield females, and intermediate
temperatures lead to both male and female offspring. This mode of sex determination is most similar to
that in
A. insects.
B. birds.
C. bees.
D. alligators.
39. A male produced from an unfertilized haploid egg is an example of what type of sex determination
system?
A. X-Y
B. Z-W
C. X-O
D. Haplo-diploid
E. None of the answers are correct
40. In several mammals, including some rat and shrew species, the presence of two X chromosomes means
the animal will be a female, whereas having just one X chromosome dictates maleness. This type of sex
determination is most similar to:
A. other mammals.
B. insects.
C. bees.
D. birds.
41. If an allele is inherited on the X chromosome, but not the Y, it is said to be an example of ________.
A. autosomal inheritance
B. X-linked inheritance
C. chromosome theory of inheritance
D. homogametic sex
E. heterogametic sex
42. Based on what you know about the biochemical composition of cells from Chapter 1 in your text book,
the primary information containing building blocks of chromosomes are likely
A. amino acids.
B. lipids.
C. nucleotides.
D. carbohydrates.
43. You are studying a type of cell that you don't know much about. You want to determine what organism
the cell comes from. You decide to watch cell division in this plant using the appropriate cell biology
tools. After some experimentation, you determine that cytokinesis in this cell is sensitive to myosin
inhibitors. You are likely studying
A. a plant cell.
B. an animal cell.
C. a bacterial cell.
D. a cell type that has not been previously studied.
44. The process where two gametes fuse with each other in the process of fertilization to begin the life of a
new organism is called
A. sexual reproduction.
B. gametogenesis.
C. asexual reproduction.
D. X-linked inheritance.
E. multicellularity.
45. You are studying a new species of plant similar to Mendel's pea plants. You are specifically interested
in two genes that are located on two different chromosomes. In this plant, the gene for height has two
alleles, T (tall) and t (short). The gene for leaf color has two alleles P (purple) and p (pink). What meiotic
products do you expect from diploid cells that are homozyous for the tall allele and heterozygous for the
purple allele?
A. An equal number of Tp, tP, tp, and TP gametes
B. An equal number of TP and Tp gametes
C. An equal number of TP and tp gametes
D. 2 TP gametes for every 1 Tp gamete
46. You are performing a fruit fly cross similar to those that Morgan performed. Unfortunately, you forgot
to write down the parents of your cross. You count the progeny, and find you have 40 red-eyed males,
80 red-eyed females, and 40 white-eyed males. Assuming that all genotypes from this cross should have
equal survival rates, what are the genotypes of the parent flies?
A. XwY and Xw+Xw+
B. XwY and Xw+Xw
C. Xw+Y and Xw+Xw
D. Xw+Y and XwXw
47.
Zip1 is a protein in yeast that is required for synaptonemal complex formation. Assuming synaptonemal
complexes are required for meiosis in yeast, where do you predict these cells arrest (stop progressing
through meiosis)?
A.
Prometaphase of meiosis I
B.
Metaphase of meiosis I
C.
Metaphase of meiosis II
D.
Between the zygotene and pachytene stages
E.
Diakinesis
48. Vincristine is a cancer chemotherapy drug. It binds to tubulin dimers, inhibiting assembly of
microtubules. Where do you predict that vincristine stops the cell cycle?
A. S phase
B. Prophase
C. Metaphase
D. Telophase
49. The yeast Saccharomyces cerevisiae produces haploid cells of two mating types, a and α, which are
morphologically similar. Cells of opposite mating types can mate. Saccharomyces cerevisiae is a(n)
___________ species.
A. isogamous
B. heterogamous
C. prokaryotic
D. asexual
50. A diploid organism that you are studying has 17 chromosomes. How many total chromosomes are found
in a somatic cell from this organism? A sperm cell? An egg cell?
A. 17; 16; 16
B. 17; 17; 17
C. 34; 17; 34
D. 34; 17; 17
ch03 Key
1. genetic information is contained within a nucleoid region. and genetic material is organized as a single circular chromosome. and a cell
wall surrounds the plasma membrane.
2. B
3. D
4. D
5. C
6. B
7. D
8. B
9. C
10. C
11. B
12. C
13. E
14. D
15. A
16. E
17. C
18. B
19. D
20. D
21. B
22. B
23. A
24. C
25. B
26. C
27. B
28. D
29. D
30. D
31. C
32. B
33. B
34. A
35. D
36. B
37. B
38. D
39. D
40. B
41. B
42. C
43. B
44. A
45. B
46. C
47. D
48. C
49. A
50. D
ch03 Summary
Category
# of Questions
Accessibility: Keyboard Navigation
49
Bloom's Level: 1. Remember
21
Bloom's Level: 2. Understand
14
Bloom's Level: 3. Apply
7
Bloom's Level: 4. Analyze
8
Brooker - Chapter 03
50
General LO: Understand processes and molecular mechanisms involved in mitosis and meiosis.
1
Learning Outcome: 03.01.01 Define the term chromosome.
1
Learning Outcome: 03.01.02 Outline key differences between prokaryotic and eukaryotic cells.
2
Learning Outcome: 03.01.03 Describe the procedure for making a karyotype.
2
Learning Outcome: 03.01.04 Compare and contrast the similarities and differences between homologous chromosomes.
3
Learning Outcome: 03.02.01 Describe the process of binary fission in bacteria.
1
Learning Outcome: 03.02.02 List and outline the phases of the eukaryotic cell cycle.
3
Learning Outcome: 03.03.01 Describe the structure and function of the mitotic spindle.
2
Learning Outcome: 03.03.02 List and describe the phases of mitosis.
7
Learning Outcome: 03.03.03 Outline the key differences between cytokinesis in animal and plant cells.
1
Learning Outcome: 03.04.01 List and describe the phases of meiosis.
10
Learning Outcome: 03.04.02 Compare and contrast the key differences between mitosis and meiosis.
2
Learning Outcome: 03.05.01 Define sexual reproduction.
2
Learning Outcome: 03.05.02 Describe how animals make sperm and egg cells.
2
Learning Outcome: 03.05.03 Explain how plants alternate between haploid and diploid generations.
4
Learning Outcome: 03.06.01 List the key tenets of the chromosome theory of inheritance.
2
Learning Outcome: 03.06.02 Explain the relationship between meiosis and Mendel’s laws of inheritance.
1
Learning Outcome: 03.06.03 Outline different mechanisms of sex determination.
3
Learning Outcome: 03.06.04 Analyze the results of Morgan’s experiment, which showed that a gene affecting eye color in fruit flie
1
s is located on the X chromosome.
Section: 03.01
8
Section: 03.02
6
Section: 03.03
11
Section: 03.04
10
Section: 03.05
8
Section: 03.06
7
Topic: Cell Division
6
Topic: General Features Of Chromosomes
8
Topic: Meiosis
10
Topic: Mitosis And Cytokinesis
11
Topic: Sexual Reproduction
8
Topic: The Chromosome Theory Of Inheritance And Sex Chromosomes
7