Bio 156: Exam 2 Questions And Answers
With Verified Solutions Rated A+ Newly
Updated 2025
Cell Division
Answer: Lesson 7: Chapters 7 (Sections 7.1 - 7.4) and 8 (Sections 8.1 - 8.4)
During the G2 phase of the cell cycle, cells make proteins needed for cell
division
Answer: ✔✔ True
Division by mitosis produces two cellular descendants, each with half the
chromosome number of the parent
Answer: ✔✔ False (Each descendant has the same number of chromosomes as the
parent.)
Sister chromatids are identical
Answer: ✔✔ True
Which of the following body processes requires mitosis?
a. Sexual reproduction
b. Metabolism
c. Wound repair
d. Protein synthesis
Answer: ✔✔ c. Wound repair
Which of the following is not a purpose of cell cycle checkpoints?
a. Ensure that the cell's DNA has been copied completely
b. Ensure that the cell's DNA has not been damaged
,c. Ensure that enough nutrients are available to support division
d. Ensure that cells have enough RNA for protein synthesis
Answer: ✔✔ d. Ensure that cells have enough RNA for protein synthesis
Which of the following is the correct order for the stages of mitosis?
a. Prophase, anaphase, metaphase, telophase
b. Prophase, metaphase, anaphase, telophase
c. Telophase, anaphase, metaphase, prophase
d. Anaphase, prophase, metaphase, telophase
Answer: ✔✔ b. Prophase, metaphase, anaphase, telophase
Connect the centrosomes to the chromosomes
Answer: ✔✔ Microtubules
During anaphase, chromosomes arrive at opposite spindle poles, decondense,
and become enclosed by a new nuclear envelope
Answer: ✔✔ False
The mechanism of cytoplasmic division is called
Answer: ✔✔ Cytokinesis
Which of the following forms the cleavage furrow?
a. Contractile ring
b. Sister chromatids
c. Fusion of nuclear membranes
d. Vesicles along the plane of division
Answer: ✔✔ a. Contractile ring
, During telophase in plant cells, vesicles at the plane of division start to fuse
into a flat cell plate
Answer: ✔✔ True
DNA replication occurs during which stage?
Answer: ✔✔ Interphase
Mitosis is the mechanism of nuclear division, whereas cytokinesis involves the
division of the cytoplasm
Answer: ✔✔ True
What is the role of proto-oncogenes?
Answer: ✔✔ Proto-oncogenes encode proteins that promote mitosis.
During which phase do duplicated chromosomes become visible under a light
microscope as they condense?
Answer: ✔✔ d. Prophase
As mitosis begins, each chromosome consists of two DNA molecules attached
as _______
Answer: ✔✔ b. Sister chromatids
In animal cells, cytokinesis takes place by _____.
Answer: ✔✔ c. Cleavage furrow
Which components stimulate a cell to divide and differentiate?
Answer: ✔✔ a. Growth factors
With Verified Solutions Rated A+ Newly
Updated 2025
Cell Division
Answer: Lesson 7: Chapters 7 (Sections 7.1 - 7.4) and 8 (Sections 8.1 - 8.4)
During the G2 phase of the cell cycle, cells make proteins needed for cell
division
Answer: ✔✔ True
Division by mitosis produces two cellular descendants, each with half the
chromosome number of the parent
Answer: ✔✔ False (Each descendant has the same number of chromosomes as the
parent.)
Sister chromatids are identical
Answer: ✔✔ True
Which of the following body processes requires mitosis?
a. Sexual reproduction
b. Metabolism
c. Wound repair
d. Protein synthesis
Answer: ✔✔ c. Wound repair
Which of the following is not a purpose of cell cycle checkpoints?
a. Ensure that the cell's DNA has been copied completely
b. Ensure that the cell's DNA has not been damaged
,c. Ensure that enough nutrients are available to support division
d. Ensure that cells have enough RNA for protein synthesis
Answer: ✔✔ d. Ensure that cells have enough RNA for protein synthesis
Which of the following is the correct order for the stages of mitosis?
a. Prophase, anaphase, metaphase, telophase
b. Prophase, metaphase, anaphase, telophase
c. Telophase, anaphase, metaphase, prophase
d. Anaphase, prophase, metaphase, telophase
Answer: ✔✔ b. Prophase, metaphase, anaphase, telophase
Connect the centrosomes to the chromosomes
Answer: ✔✔ Microtubules
During anaphase, chromosomes arrive at opposite spindle poles, decondense,
and become enclosed by a new nuclear envelope
Answer: ✔✔ False
The mechanism of cytoplasmic division is called
Answer: ✔✔ Cytokinesis
Which of the following forms the cleavage furrow?
a. Contractile ring
b. Sister chromatids
c. Fusion of nuclear membranes
d. Vesicles along the plane of division
Answer: ✔✔ a. Contractile ring
, During telophase in plant cells, vesicles at the plane of division start to fuse
into a flat cell plate
Answer: ✔✔ True
DNA replication occurs during which stage?
Answer: ✔✔ Interphase
Mitosis is the mechanism of nuclear division, whereas cytokinesis involves the
division of the cytoplasm
Answer: ✔✔ True
What is the role of proto-oncogenes?
Answer: ✔✔ Proto-oncogenes encode proteins that promote mitosis.
During which phase do duplicated chromosomes become visible under a light
microscope as they condense?
Answer: ✔✔ d. Prophase
As mitosis begins, each chromosome consists of two DNA molecules attached
as _______
Answer: ✔✔ b. Sister chromatids
In animal cells, cytokinesis takes place by _____.
Answer: ✔✔ c. Cleavage furrow
Which components stimulate a cell to divide and differentiate?
Answer: ✔✔ a. Growth factors
