Explore topic-wise MCQs in Biotechnology.

This section includes 28 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.

1.

The G0 phase is

A. a permanent state of all body cells
B. the state of most cells in an animal body
C. another name for interphase
D. all of the above
Answer» C. another name for interphase
2.

The term homologous chromosomes

A. refers to replications of the same chromosome
B. is another name for sister chromatids
C. must be haploid
D. means a pair of chromosomes of the same kind, such as sex chromosomes
Answer» E.
3.

At the center of the cell cycle control system is Cdk, a protein that

A. is phosphorylated to become active
B. binds to different cyclins
C. is only active during mitosis
D. manufactures growth factors
Answer» C. is only active during mitosis
4.

Cdks bind with __________ , enabling the Cdks to function as enzymes.

A. MPF
B. cyclins
C. histones
D. p
E. <sup>53</sup>
Answer» C. histones
5.

Which of the following is not a part of a human chromosome in any phase?

A. Centriole
B. Histone
C. Nucleosome
D. Centromere
Answer» B. Histone
6.

In which phase, each chromosome replicates to produce two sister chromatids?

A. Anaphase
B. Interphase
C. Metaphase
D. Prophase
Answer» C. Metaphase
7.

Microtubules grow from the poles to kinetochores of each chromatid during

A. prophase
B. metaphase
C. anaphase
D. telophase
Answer» B. metaphase
8.

Which of the following triggers the division of activated T lymphocytes?

A. FGF
B. Interlukin 2
C. PDGF
D. Erythroprotein
Answer» C. PDGF
9.

The term, not related to mitosis is

A. gametes
B. chromosomes
C. DNA replication
D. somatic cells
Answer» B. chromosomes
10.

What structure forms as a network of protein cables during cell division?

A. Spindle
B. Aster
C. Kinetochore
D. Chromatid
Answer» B. Aster
11.

A centromere is

A. another name for kinetochore
B. the structure to which microtubules attach
C. a constriction on a chromosome bound to a disk
D. all of the above
Answer» E.
12.

Which of the following statements about mitosis is incorrect?

A. The daughter nuclei are genetically identical to the parent nucleus
B. Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
C. Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
D. Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers
Answer» C. Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
13.

Which phase of mitosis is associated with separation of chromatids?

A. Prophase
B. Metaphase
C. Anaphase
D. Telophase
Answer» D. Telophase
14.

Sequences that correctly describes the cell cycle is

A. -> G1-> G2 -> S -> mitosis -> cytokinesis ->
B. -> S -> G2 -> mitosis -> cytokinesis -> G1 ->
C. -> G1 ->S -> G2 -> cytokinesis -> mitosis ->
D. ->cytokinesis-> mitosis -> G1 -> S -> G2 ->
Answer» C. -> G1 ->S -> G2 -> cytokinesis -> mitosis ->
15.

Which of the following begins when pairs of sister chromatids align in the center of the cell?

A. Anaphase
B. Interphase
C. Metaphase
D. Prophase
Answer» D. Prophase
16.

The phase of mitosis which is associated with the formation of the nuclear envelope, is

A. prophase
B. metaphase
C. anaphase
D. telophase
Answer» E.
17.

A nuclear envelope forms around each set of sister chromatids in

A. anaphase
B. metaphase
C. prophase
D. telophase
Answer» E.
18.

Which of the following from a blood clot stimulates the growth of cells in the healing process?

A. EGF
B. PDGF
C. MPF
D. NGF
Answer» C. MPF
19.

Which phase of mitosis is associated with chromosomes aligned at the center of the cell and centromeres divide?

A. anaphase
B. interphase
C. metaphase
D. prophase
Answer» D. prophase
20.

The event(s) which does not occur during interphase, is/are

A. Chromatin condenses
B. Protein Synthesis
C. Organelles replication
D. DNA replication
Answer» B. Protein Synthesis
21.

In prokaryotes, just before the cell divides, the two daughter genomes are attached side by side to the

A. cell membrane
B. replication origin
C. centromeres
D. equatorial plate
Answer» B. replication origin
22.

The cell cycle is controlled in most cells by

A. time (after a certain length of time the cell divides)
B. a series of checkpoints
C. cell size (when the cell reaches a certain size, it divides)
D. different cells exhibit different control strategies
Answer» E.
23.

The centromeres move toward the poles in __________ .

A. anaphase
B. interphase
C. metaphase
D. prophase
Answer» B. interphase
24.

Cells which no longer divide (such as certain specialized cells found in the human brain) remain in which phase of the cell cycle?

A. Prophase
B. S phase
C. G0 Phase
D. Gl Phase
Answer» D. Gl Phase
25.

How many chromatids does a diploid body cell contain just prior to cell division?

A. 23
B. 46
C. 69
D. 92
Answer» E.
26.

How many chromatids are there in a duplicated chromosome?

A. One
B. Two
C. Three
D. Four
Answer» C. Three
27.

Which of the following is the normal cell cycle, primarily regulated at checkpoints?

A. Metaphase in mitosis
B. Anaphase, G1 boundary
C. G1-S boundary
D. S-G2 boundary
Answer» D. S-G2 boundary
28.

Each chromosome contains two chromatids by the end of the __________ phase in the life cycle of a human cell.

A. C
B. G
C. <sub>2</sub>
D. M
E. S
Answer» E. S