Question

use the diagram to answer questions 36 and 37

1. the structure labeled a is called the

a. centromere.
b. centriole.
c. sister chromatid.
d. spindle.

1. the structures labeled b are called

a. centromeres.
b. centrioles.
c. sister chromatids.
d. spindles.

1. the phase of mitosis that is characterized by the arrangement of all chromosomes along the middle of the cell is called

a. telophase. c. anaphase.
b. metaphase. d. prophase

1. the stage in the cell cycle in which the cytoplasm is divided.

a. interphase c. cytokinesis
b. telophase d. anaphase
use the image below for questions 40 - 42

1. refer to the illustration above. the cell in diagram 1 is in

a. metaphase. c. anaphase.
b. telophase. d. prophase.

1. refer to the illustration above. metaphase is shown in diagram

a. 1
b. 2
c. 3
d. 4

Explanation:

For question 36: A chromosome consists of two sister chromatids joined at the centromere. The structure labeled A is a sister chromatid.
For question 37: The structures labeled B are sister chromatids which are identical copies formed during DNA replication.
For question 38: In metaphase, chromosomes align along the equatorial plane (middle) of the cell.
For question 39: Cytokinesis is the stage where the cytoplasm divides, resulting in two daughter cells.
For question 40: Diagram 1 shows chromosomes moving towards opposite poles, which is characteristic of anaphase.
For question 41: Diagram 3 shows chromosomes aligned in the middle, which is metaphase.

Answer:

1. C. sister chromatid
2. C. sister chromatids
3. B. metaphase
4. C. Cytokinesis
5. C. anaphase
6. C. 3