Question

In: Biology

Describe the process of mitosis, and its role in the cell life cycle.

Expert Solution

Answer=

process of mitosis- mitosis is a process where a single cell divides into two identical daughter cells.

mitosis is divided into 5 phases:

1.Interphase=

The DNA in the cell is copied in preparation for cell division,this results in two identical full sets of chromosomes.

outside of nucleus there are 2 centromeres,each containing a pair of centrioles,these structures are critical for the process of cell division.

during interphase,microtubules extend from these centrosomes.

2] Prophase= The chromosomes condense into X-shaped structures that can easily seen under a microscope.

each chromosome is composed of two sister chromatides ,containing identical genetic information.

The chromosomes pair up so that both copies of chromosome are together.

At the end of prophase the membrane around the nucleus in the cell dissolves away releasing the chromosomes.

The mitotic spindle,consisting of the microtubules & other proteins ,extends across the cell between the centrioles as they move to opposite poles of the cell.

3.Metaphase= The chromosomes line up neatly end-to end along the center of the cell.

The centrioles are now at opposite poles of the cell with the mitotic spindle fibres extending from them.

The mitotic spindle fibres attach to each of the sister chromatids.

4.Anaphase:

The sister chromatids are then pulled apart by the mitotic spindle which pulls one chromtid to one pole & the other chromatid to the opposite pole.

5.Telophase=

At each pole of the cell a full set of chromosomes gather together.

A membrane forms around each set of chromosomes to create two new nuclei.this process called as cytokinesis.

Role of mitosis in cell cycle= for growth and to replace worn out cells.

gladiator answered 1 year ago

a. Compare the process of mitosis with the process of meiosis. Describe major cell cycle events....

a. Compare the process of mitosis with the process of meiosis. Describe major cell cycle events. (points: 4) What is significance of these two cell division types.

Discuss the human life cycle including the process of mitosis and meiosis

Mitosis and meiosis are both important processes of cell division in the life cycle of a sexual organism.

Mitosis and meiosis are both important processes of cell division in the life cycle of a sexual organism.1. Discuss why both processes are necessary.2. List the differences between Prophase of mitosis and Prophase I of meiosis. How do these differences contribute/ lead to genetic variation?

As a result of mitosis cell (during cell division) of the Cell cycle, the number of...

As a result of mitosis cell (during cell division) of the Cell cycle, the number of chromosomes in the 2 new cells is a) used to eliminate mutations t, b) increased to 3 times the normal or diploid number, c) is reduced to 1/2 half of the diploid (normal) number representing one full set of chromosomes, d) is reduced to 1/2 the diploid number producing a random set of chromosomes, e) kept constant. The evolution of the three germ layers...

Real estate Describe the real estate life cycle and what forces play a role in its...

Real estate Describe the real estate life cycle and what forces play a role in its composition.

Describe the role a health informatics professional in managing health information throughout its life cycle and...

Describe the role a health informatics professional in managing health information throughout its life cycle and challenging related to protecting the integrity of health information.

Describe the role of the zygospore in the life cycle of zygospore fungi. Scientific Basis: Describe...

Describe the role of the zygospore in the life cycle of zygospore fungi. Scientific Basis: Describe what distinguishes the fruiting structures of sac fungi from those of club fungi. Scientific Basis:

The cell cycle represents the coordinated sequence of events in the life of a cell from its formation to its division into two daughter cells.

The cell cycle represents the coordinated sequence of events in the life of a cell from its formation to its division into two daughter cells. Most of the key events of the cell cycle are restricted to a specific time within the cycle. In this exercise, you will identify when various events occur during the cell cycle. Recall that interphase consists of the G1, S, and G2 subphases, and that the M phase consists of mitosis and cytokinesis. Drag each...

As in most areas of biology, the study of mitosis and the cell cycle involves a lot of new terminology.

Mitosis and cell cycle terminology 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. Drag the terms on the left to correctly complete these sentences. Not all the terms will be used.

Explain the purpose of mitosis and describe the four stages of this process.