BME Chapter 16
17
Question 1 1 out of 1 points Crossing over occurs during which phase? Answer Selected Answer: b. Prophas e I Correct Answer: b. Prophas e I Question 2 1 out of 1 points Chromatids can be found in which of the following types of cell division? I. Mitosis II. Meiosis I III. Meiosis II Answer Selected Answer: b. I, II and III Correct Answer: b. I, II and III Question 3 1 out of 1 points The following are consequences of meiotic recombination: I. Increased genetic diversity II. Exchange of parts of homologous chromosomes III. Stabilization of chromosomes at the metaphase plate Answer
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Quiz 16
Transcript of BME Chapter 16
Question 11 out of 1 points
Crossing over occurs during which phase?
Answer
Selected Answer:
b.Prophase I
Correct Answer:
b.Prophase I
Question 21 out of 1 points
Chromatids can be found in which of the following types of cell division?
I. Mitosis
II. Meiosis I
III. Meiosis II
Answer
Selected Answer:
b.I, II and III
Correct Answer:
b.I, II and III
Question 31 out of 1 points
The following are consequences of meiotic recombination:
I. Increased genetic diversity
II. Exchange of parts of homologous chromosomes
III. Stabilization of chromosomes at the metaphase plate
Answer
Selected Answer:
b.I, II and III
Correct Answer:
b.
I, II and III
Question 41 out of 1 points
During this step, the nuclear membrane breaks down.
Answer
Selected Answer:
d.Prometaphase
Correct Answer:
a.Prophase
Question 51 out of 1 points
What happens in the 'S' phase in the diagram?
Answer
Selected Answer:
d.The DNA of the cell doubles via synthesis
Correct Answer:
d.The DNA of the cell doubles via synthesis
Question 6
1 out of 1 pointsWhich of the following statements about gametes are true?
I. In sexual reproduction, each parent provides genetic material in the form of a gamete cell.
II. Gametes are produce by mitosis.
III. If a sexually reproducing organism is diploid, the gametes are haploid.
Answer
Selected Answer:
e.I and III
Correct Answer:
e.I and III
Question 71 out of 1 points
Sister chromatids segregate to opposite poles during which of the following types of cell division?
I. Mitosis
II. Meiosis I
III. Meiosis II
Answer
Selected Answer:
e.I and III
Correct Answer:
e.I and III
Question 81 out of 1 points
Which of the following statements is TRUE?
Answer
Selected Answer:
d.Chromosome replication occurs during S phase.
Correct d.
Answer: Chromosome replication occurs during S phase.
Question 91 out of 1 points
During animal cell division, actin filaments organize into the following structure:
Answer
Selected Answer:
b.Contractile ring
Correct Answer:
b.Contractile ring
Question 101 out of 1 points
The organelle that serves as a microtubule organizing center during cell division is the
Answer
Selected Answer:
a.Centrosome
Correct Answer:
a.Centrosome
Question 111 out of 1 points
A chromatid is a what?
Answer
Selected Answer:
d.one-half of a newly replicated eukaryotic chromosome.
Correct Answer:
d.one-half of a newly replicated eukaryotic chromosome.
Question 121 out of 1 points
Which of the following structures do NOT participate in the cell division of a sunflower cell?
I. Contractile ring
II. Cell plate
III. Vesicle
Answer
Selected Answer:
a.I
Correct Answer:
a.I
Question 131 out of 1 points
Place the following steps in the cell cycle into the order in which they occur.
I. G1
II. G2
III. S phase
IV. M phase
Answer
Selected Answer:
b.I, III, II, IV
Correct Answer:
b.I, III, II, IV
Question 141 out of 1 points
Chromosome de-condensation occurs during this step.
Answer
Selected Answer:
e.Telophase
Correct e.
Answer: Telophase
Question 151 out of 1 points
The primary type of microtubule that positions the chromosome in preparation for mitosis is the ______ microtubule.
Answer
Selected Answer:
b.Kinetochore
Correct Answer:
b.Kinetochore
Question 161 out of 1 points
The protein structure on a chromosome to which microtubules may attach is a
Answer
Selected Answer:
d.Kinetochore
Correct Answer:
d.Kinetochore
Question 171 out of 1 points
Which of the following are primary functions of the centromere?
I. Hold sister chromatids together
II. Protect chromosomes
III. Repair DNA damage
Answer
Selected Answer:
a.I
Correct Answer:
a.
I
Question 181 out of 1 points
A protein that plays a central role in DNA packaging
Answer
Selected Answer:
a.histone
Correct Answer:
a.histone
Question 191 out of 1 points
A diploid cell which has one copy of chromosome 16 would be called
Answer
Selected Answer:
a.Monosomic
Correct Answer:
a.Monosomic
Question 201 out of 1 points
Segregation of ribosomes occurs during:
Answer
Selected Answer:
b.Cytokinesis
Correct Answer:
b.Cytokinesis
Question 210 out of 1 points
Two aberrant cells are found in the dividing skin tissue of an otherwise normal human. One cell has only one copy of chromosome 16 while the other has two copies. The cause of these aberrant cells is most likely due to
Answer
Selected Answer:
a.Nondisjunction during mitosis
Correct Answer:
d.Nondisjunction during meiosis I
Question 221 out of 1 points
Which of the following statements about the mitotic spindle is true?
Answer
Selected Answer:
a.It is composed of microtubules, which help separate the chromosomes to opposite poles of the cell.
Correct Answer:
a.It is composed of microtubules, which help separate the chromosomes to opposite poles of the cell.
Question 231 out of 1 points
The process in which the duplicated DNA of a diploid cell is separated into identical daughter cells is called
Answer
Selected Answer:
c.Mitosis
Correct Answer:
c.Mitosis
Question 241 out of 1 points
Replication precedes which of the following types of cell division?
I. Mitosis
II. Meiosis I
III. Meiosis II
Answer
Selected Answer:
b.I and II
Correct Answer:
b.I and II
Question 251 out of 1 points
Otherwise known as one of two copies of a replicated chromosome
Answer
Selected Answer:
e.Chromatid
Correct Answer:
e.Chromatid
Question 261 out of 1 points
Which of the following statements about kinetochores on mitotic chromosomes is true?
Answer
Selected Answer:
e.All of these statements are true.
Correct Answer:
e.All of these statements are true.
Question 271 out of 1 points
The egg cell of a rabbit, which is a diploid organism, has 22 chromosomes. How many chromosomes can be found in a rabbit's neuron cell?
Answer
Selected Answer:
d.44
Correct Answer:
d.
44
Question 280 out of 1 points
Which of the following statements about chromatids is true?
Answer
Selected Answer:
a.They are identical in meiotic chromosomes.
Correct Answer:
b.Copies of chromosomes produced during replication.
Question 291 out of 1 points
Which of the following is an example of aneuploidy?
I. A haploid cell with one copy of chromosome 21
II. A diploid cell with three copies of chromosome 21
III. A diploid cell with four copies of the X chromosome
Answer
Selected Answer:
e.II and III
Correct Answer:
e.II and III
Question 301 out of 1 points
Which of the following events occur during prophase?
I. Centrosome duplication
II. Centrosome movement to the spindle poles
III. Centrosome organization of the spindle apparatus
Answer
Selected Answer:
a.II and
III
Correct Answer:
a.II and III
Question 311 out of 1 points
The primary type of microtubule that anchors the spindle poles in preparation for mitosis is
Answer
Selected Answer:
a.Astral
Correct Answer:
a.Astral
Question 321 out of 1 points
If the cell of a diploid organism (2n = 6) undergoes meiosis, how many chromosome are present in each daughter cell at the end of meiosis II?
Answer
Selected Answer:
c.3
Correct Answer:
c.3
Question 331 out of 1 points
Which of the following structures is unique to meiosis?
Answer
Selected Answer:
a.Tetrads
Correct Answer:
a.Tetrads
Question 341 out of 1 points
All of the following occur during interphase EXCEPT:
Answer
Selected Answer:
b.Cell division
Correct Answer:
b.Cell division
Question 351 out of 1 points
If the chromosome count in a domestic cat is 2n = 38, the haploid chromosome count for a domestic cat is
Answer
Selected Answer:
c.19
Correct Answer:
c.19
Question 361 out of 1 points
Which of the following characteristics or structures are unique to meiosis?
Answer
Selected Answer:
d.Reduction of chromosome number
Correct Answer:
d.Reduction of chromosome number
Question 371 out of 1 points
Which of the following events occur during prophase II?
I. Kinetochores assemble on each tetrad
II. Chromosome condensation
III. Spindle apparatus assembly
Answer
Selected Answer:
b.II and III
Correct Answer:
b.II and III
Question 381 out of 1 points
Which of the following statements about meiosis is true?
Answer
Selected Answer:
b.The chromosome number in the resulting cells is halved.
Correct Answer:
b.The chromosome number in the resulting cells is halved.
Question 391 out of 1 points
Which of the following statements about asexual reproduction is NOT true?
Answer
Selected Answer:
c.It is an outdated, seldom used form of reproduction.
Correct Answer:
c.It is an outdated, seldom used form of reproduction.
Question 401 out of 1 points
If the diploid chromosome count in humans is 46, how many pairs of homologous chromosomes are there?
Answer
Selected Answer:
e.23
Correct Answer:
e.
23
Question 411 out of 1 points
What is the difference between G0, G1, and G2 in the cell cycle? Refer to the diagram below for a reminder of the timing for these events.
Answer
Selected Answer:
a.In G0 the cell is at rest and has left the cell cycle. In G1 the cell increases in size and prepares for chromosome replication in S. In G2, the cell is also increasing in size in preparation for M and cell division.
Correct Answer:
a.In G0 the cell is at rest and has left the cell cycle. In G1 the cell increases in size and prepares for chromosome replication in S. In G2, the cell is also increasing in size in preparation for M and cell division.
Question 421 out of 1 points
A discrete unit of DNA that produces a protein that provides the functionality a cell needs is
Answer
Selected Answer:
c.gene
Correct Answer:
c.gene
Question 431 out of 1 points
A picture in which all of the homologous chromosomes of an organism have been stained and organized is called a(n)
Answer
Selected Answer:
b.Karyogram
Correct Answer:
b.Karyogram
