Can Cell Cycle Go Endlessly

Q.

How many mitotic divisions are required to produce 128 cells from a single cell?

1. 7

2. 8

3. 14

4. 16

Q.

What is the difference between regeneration and fibrosis?

Q.

What is the interphase of the cell cycle?

Q. What is the correct sequence of phases in an eukaryotic cell cycle?

Q. In a proliferating cell system, how many mitotic divisions are required to produce $1024$ cells from a single parent cell?

1. $10$
2. $20$
3. $512$
4. $1023$

Q.

Do living organisms maintain a steady state?

Q.

NAME THE FOLLOWING

Two structures found only in animal cell and not in plant cell.

Q.

The cell plate forms only after karyokinesis in a plant cell.

1. True
2. False

Q.

Cell in the G₀ phase does the following?

1. exits the cell cycle

2. enters the cell cycle

3. suspends the cell cycle

4. terminates the cell cycle

Q.

If the cell cycle is restricted in $G_1$ phase of cell, the condition is known as

1. S phase

2. ​ phase

3. M phase

4. ​ phase

Q. Which tissue has the least regenerative capacity in human body?

Q. In the $24$ hour average duration of cell cycle of a human cell, cell division properly lasts for about.

1. 24 hours
2. 12 hours
3. 5 hours
4. 7 hours

Q. What is the correct sequence of phases in an eukaryotic cell cycle?

Q. Which of the following four is involved in cell cycle control?

1. Proteolysis of cyclins
2. Phosphorylation of cyclins
3. Proteolysis of cyclin dependent kinases
4. Dephosphorylation of cyclins

Q. Cyclin is required for cell cycle. Which other molecule is essential for completion of cell cycle ?

1. CCK
2. CKC
3. CDK
4. CKD

Q. What would most likely be interfered with if cyclin B did not function correctly?

1. Entry into the mitosis stage of the cell cycle
2. Formation of microtubules
3. Separation of chromosomes
4. Activation of apoptosis
5. Unscheduled entry into the G${}_2$ phase

Q. Progression of cell cycle is regulated by the concentration of which type of molecule?

1. Cyclins
2. Centrosomes
3. Cyclin-dependent kinases
4. Microtubule

Q.

If a cell needs to quit dividing, it enters a state where it stagnates to carry its normal cell activity. This is called as the _____ phase.

1. M

2. G₂

3. G₀

4. S

Q. The progression of the cell cycle is under the control of

1. CDK
2. cyclin
3. cyclin-CDK complexes
4. $G_0$ phase

Q. Which substance functions during the cell cycle in a regulatory role to prevent cancer?

1. Cyclin A
2. MPF
3. Cycl in D
4. p53 protein
5. CDK

Q.

Why Is G1 considered to be a significant regulatory period?

Q.

How do actually cells form?

Q. The best material for studying mitosis in the laboratory is

1. Shoot tip
2. Root tip
3. Gamete
4. Leaf tip

Q. Which substances, that are necessary in regulating the cell cycle, are important targets for designing drugs to treat many types of cancers?

1. Oncogenes
2. Histones
3. CDK's
4. Lysosomes
5. Peroxisomes

Q. Which of these is the first $4c$ acid produced in TCA cycle?

1. oxalocetate
2. $\alpha$-ketoglutarate
3. succinate
4. malate

Q.

wht kind of cell division takes place in organisms reproducing by asexual method?

Q. Which of the following sequence of events occur after DNA replication during cell cycle?

1. I, II and III
2. I and III only
3. I only
4. I and II only
5. II only

Q. An alkaloid which arrests cell division is obtained from

1. Chrysanthemum
2. Crocus
3. Dalbergia
4. Colchicum