Question

As in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology. Knowing what the different terms mean is essential to understanding and describing the processes occurring in the cell.

1. DNA replication produces twc identical DNA molecules, called______, which separate during mitosis.
2. After chromosomes condense, the_____is tie region where the identical DNA molecules are most tightly attached to each other.
3. During mitosis, microtubules attach to chromosomes at the_______.
4. In dividing cells, most of the cell's growth occurs during______.
5. The______is a cell structure consisting of microtubules, which forms during early mitosis and plays a rule in cell division.
6. During interphase, most of the nucleus is filled with a complex of DNA and protein in a dispersed form called________.
7. In most eukaryotes, division of the nucleus is followed by_______, when the rest of the cell divides.
8. The_______are the organizing centers for microtubules involved in separating chromosomes during mitosis.

Answer 1

1. Sister chromatid.

2. Centromere.

3. Kinetochore.

4. Interphase

5. Mitotic spindle

6. Chromatin

7. Cytokinesis.

8. Centrosome.

Explanation:

DNA replication produces two identical DNA molecules which are known or called as sister chromatids, by cell division each sister chromatid is separated. The region on chromosome known as centromere, by which they are most tightly attached to each other.

During cell division, micro-tubules attach to chromosomes at the region on chromosome knwon as kinetochore. In replicating or dividing cells, most of the growth like DNA replication and other type of growth also occurs during inter-phase.The mitotic spindle: consisting of micro-tubules, which plays role in cell division.

During inter-phase, DNA is in unfolded state and is called or known as chromatin.

The division of cytoplasm which occurs after karyokinesis is known or called as cytokinesis.

The centrosomes is the organizing centers for microtubules, and these microtubules works in the separation of chromosomes during cell division.