Cell Biology in Biotechnology MCQs

Question 1

How many mitotic divisions shall occur to produce 64 cells from 2 cells

Accepted Answer

5

Answer

62

Answer

32

Answer

63

Question 2

Which one of the following intermediate filament proteins is present in the nucleus?

Accepted Answer

Lamin

Answer

Vinculin

Answer

Nestin

Answer

Laminin

Question 3

Secretory proteins synthesized by ER-associated ribosomes traverse through

Accepted Answer

The Golgi apparatus

Answer

Mitochondria

Answer

Peroxisomes

Answer

The nucleus

Question 4

Which one of the following result is expected when a mammalian cell in S-phase is fused with another in G2?

Accepted Answer

G2 phase nucleus will wait for S-phase nucleus to complete the replication and both the nuclei simultaneously enter into M-phase

Answer

S-phase nucleus would immediately enter into G2 phase without completing the replication phase

Answer

Both the nuclei would follow their corresponding cell cycle without influencing each other

Answer

Due to influence of S-phase promoting factor, G2-phase nucleus will enter into S-phase

Question 5

If a fluorescent dye is injected into the lumen of the endoplasmic reticulum (ER), in which of the following compartments can fluorescence signal can be observed?

Accepted Answer

ER, Golgi and nuclear envelope

Answer

ER only

Answer

Golgi only

Answer

ER and Golgi

Question 6

In a typical mitotic cell division cycle in eukaryotes, M phase occurs immediately after the

Accepted Answer

G2 phase

Answer

G0 phase

Answer

S phase

Answer

G1 phase

Question 7

In the course of cell cycle, the level of the protein cyclin abruptly falls during

Accepted Answer

M phase

Answer

G1 phase

Answer

S phase

Answer

G2 phase

Question 8

Hayflick limit of mammalian cells refers to which one of the following?

Accepted Answer

Cells in primary cell culture undergo senescence after 50-60 passages

Answer

Primary cells cultured in vitro do not cross the limit of cell transformation

Answer

Cell lines when cultured in vitro have a limit for their surface to volume ratio

Answer

Malignant cell lines undergo senescence after 50-60 passages

Question 9

A cargo has to be delivered from the centre of the cell to the cell periphery using the microtubule network. To which proteins does it need to be associated with

Accepted Answer

Kinesin

Answer

Dynein

Answer

Microtubule associated protein-4

Answer

Myosin