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Chapter 12: Q1TYU (page 234)

Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely.

(a) an animal cell in the process of cytokinesis.

(b) a plant cell in the process of cytokinesis.

(c) a bacterial cell dividing

(d) a plant cell in metaphase

Short Answer

Expert verified

(A) The option 鈥渁n animal cell in the process of cytokinesis鈥� is false.

(B) The option 鈥渁 plant cell in the process of cytokinesis鈥� is true.

(C) The option 鈥渁 bacterial cell dividing鈥� is false.

(D) The option 鈥渁 plant cell in metaphase鈥� is false

Step by step solution

01

Description of cell division 

Cell division is the process that creates new cells from the existing cells. The cell division process that takes place in plant and animal cells are more or less similar. There are variations in a few steps.

02

Explanation of option (A) 

The cytokinesis process takes place in the animal cells that involves the formation of the cleavage furrow. After forming this furrow, the parent cell gets divided into two cells.

The cell plate formation of the cytokinesis process does not take place in animal cells.

Therefore, the given statement is false.

03

Explanation of option (B)

In the plant, the cytokinesis process takes place differently. It involves the formation of a cell plate to divide the two plant cells.

The cell plate formation happens in the plant cells at the final stage of cell division.

Therefore, the given statement is true.

04

Explanation of option (C)

The cell division process also occurs in a minute organism like bacteria. In this process, the bacterial cells divide into daughter cells by forming septum.

The cell plate formation does not take place in the bacterial cells.

Therefore, the given statement is false.

05

Explanation of option (D)

The cell plate formation occurs during the final step of the cell division mechanism known as cytokinesis. Metaphase is the middle phase of the cell cycle.

The separation of duplicated genetic material does not take place in the metaphase.

Therefore, the given statement is false.

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Most popular questions from this chapter

In Figure 12.14, why do the nuclei resulting from experiment 2 contain different amounts of DNA?

Compare the roles of tubulin and actin during eukaryotic cell division with the roles of tubulin-like and actin-like proteins during bacterial binary fission.

The decline of MPF activity at the end of mitosis is due to

(A) the destruction of the protein kinase CDK.

(B) decreased synthesis of Cdk.

(C) degradation of cyclin

(D) accumulation of cyclin.

The histogram representing the treated sample shows the effect of growing the cancer cells alongside human umbilical cord stem cells that produce the potential inhibitor. (a) Label the histogram with the cell cycle phases. Which phase of the cell cycle has the greatest number of cells in the treated sample? Explain. (b) Compare the distribution of cells among G1, S, and G2 phases in the control and treated samples. What does this tell you about the cells in the treated sample? (c) Based on what you learned in Concept 12.3, propose a mechanism by which the stem cell-derived inhibitor might arrest the cancer cell cycle at this stage. (More than one answer is possible.)

What other functions do actin and tubulin carry out? Name the proteins they interact with to do so. (Review Figures 6.21a and 6.26a.)

Figures 6.21a:

Figures 6.26a:
See all solutions

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