• The Cell Cycle Phases
• Understanding The Cell Cycle Mr. Mac's Page Number
• Understanding The Cell Cycle Mr. Mac's Page Book

The cell cycle refers to the events that somatic cells - which includes all of the cells in our bodies except the reproductive cells - go through from the moment they’re formed until the moment they divide in two identical daughter cells. One of the critical processes monitored by the cell cycle checkpoint surveillance mechanism is the proper replication of DNA during the S phase. Even when all of the cell cycle controls are fully functional, a small percentage of replication errors (mutations) will be passed on to the daughter cells.

For your better test preparation and better Biology MCQs preparation, in this section, we are posting Cell Cycle MCQs.

The cell is also important; a good example of this is the genera-tion of bipolarity required for chromosome segregation. However, the establishment of positional information within the cell and its interaction with cell-cycle events and controls still remain obscure. There are exciting times ahead, but if we. These cells express a thermosensitive SV40 large T antigen that can be deactivated by adjustment of cell culture conditions, allowing the cell line to regain normal control of the cell cycle. The isolated urothelial cell line demonstrates a polygonal, dome-shaped morphology, expresses cytokeratin 18, and exhibits well-developed tight junctions.

For example, when a cell divides, it makes a copy of its DNA — and sometimes the copy is not quite perfect. That small difference from the original DNA sequence is a mutation. To download this image, right-click (Windows) or control-click (Mac) on the image and select 'Save image.'

The cell cycle is also known as the cell-division cycle. The cell cycle is the series of events that take place in a cell leading to its division and duplication of its DNA (DNA replication) to produce two daughter cells. In bacteria, which lack a cell nucleus, the cell cycle is divided into the B, C, and D periods.

Cell Cycle MCQs

1. The period between two consecutive divisions is called
A. Interphase
B. Resting phase
C. Mitotic phase
D. Cell cycle

2. DNA is synthesized and chromosome number is doubled in
A. G1 phase
B. S phase
C. G2 phase
D. G0 phase

3. In the case of neurons, post-mitotic cell escapes cell cycle and remain in _______ phase without proliferating further
A. G0 phase
B. G1 phase
C. G2 phase
D. S phase

4. Which statement is incorrect?
A. In human, the cell cycle is about 24 hrs
B. Mitosis takes 30 min
C. G2 5.5 hrs
D. Yeast cell only 90 min

5. Mitosis occurs in
A. Diploid cells only
B. Haploid cells only
C. Both diploid and haploid cells
D. Monoploid cells

6. Microtubules are composed of
A. Action protein
B. Actin and myosin proteins
C. Sphingomyelin and tubulin
D. Tubulin protein and traces of RNA

7. From each pair of centrioles ________ sets of microtubules originate
A. 2
B. 3
C. 4
D. 5

8. Mitotic apparatus in animals is formed by
A. Aster and spindle
B. Polar and kinetochore microtubules
C. Spindle and RNA
D. Spindle only

9. A special area of centromere with the specific base arrangement and specific proteins where spindle fibers are attached is called
A. Chromatin
B. Aster
C. Kinetochore
D. Primary constriction

10. Each kinetochore gets ________ fibers in mitosis
A. 5
B. 4
C. 3
D. 2

The Cell Cycle Phases

Understanding The Cell Cycle Mr. Mac's Page Number

Understanding The Cell Cycle Mr. Mac's Page Book

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