What is meant by the cell cycle?

What is meant by the cell cycle?
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1 Answer

Answer :

•The continuity of life is based on the reproduction of cells, or cell division
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Related questions

What is a cell cycle checkpoint?

Description : What is a cell cycle checkpoint?

Last Answer : The sequential events of the cell cycle are directed by a distinct cell cycle control system, which is similar to a clock The cell cycle control system is regulated by both internal and ... The clock has specific checkpoints where the cell cycle stops until a go-ahead signal is received

How many chromosomes are in a human somatic cell?

Description : How many chromosomes are in a human somatic cell?

Last Answer : •Somatic cells (nonreproductive cells) have two sets of chromosomes

List two specific cancer treatments, and tell how each treatment works.

Description : List two specific cancer treatments, and tell how each treatment works.

Last Answer : Chemotherapy: Medication usually formulated chemically, and radiation where radiation is directed in certain doses via electromagnetic waves

What are growth factors?

Description : What are growth factors?

Last Answer : •Some external signals are growth factors, proteins released by certain cells that stimulate other cells to divide

What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Description : What happens if all the chromosome kinetochores are not attached to spindle fibers? When this occurs, which checkpoint is not passed?

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, not proceeding onto the S phase

What does MPF trigger? What are some specific activities that it triggers?

Description : What does MPF trigger? What are some specific activities that it triggers?

Last Answer : •MPF (maturation-promoting factor) is a cyclin-Cdk complex that triggers a cell’s passage past the G2 checkpoint into the M phase

The activity of cyclin-dependent kinases (CDks) rises and falls. Why?

Description : The activity of cyclin-dependent kinases (CDks) rises and falls. Why?

Last Answer : •The activity of cyclins and Cdks fluctuates during the cell cycle, molecularly, it either receives a message to go ahead or not to go ahead.

What is a protein kinase?

Description : What is a protein kinase?

Last Answer : The Cell Cycle Clock: Cyclins and Cyclin-Dependent Kinases •Two types of regulatory proteins are involved in cell cycle control: cyclins and cyclin-dependent kinases (Cdks)

What is the Go phase? Describe this phase.

Description : What is the Go phase? Describe this phase.

Last Answer : •If the cell does not receive the go-ahead signal, it will exit the cycle, switching into a nondividing state called the G0 phase

What are the components of the mitotic spindle?

Description : What are the components of the mitotic spindle?

Last Answer : •The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

What is a kinetochore?

Description : What is a kinetochore?

Last Answer : •During prometaphase spindle microtubules appear and are kinetochores (somewhat track like) where sister chromatids travel along them to the centriole (astor, opposite pole) region. .

In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Description : In animal cells, the assembly of spindle microtubules starts at the centrosome. What is another name for the centrosome?

Last Answer : •During prophase, assembly of spindle microtubules begins in the centrosome, the microtubule organizing center

What are the components of the mitotic spindle? What is the source of these components?

Description : What are the components of the mitotic spindle? What is the source of these components?

Last Answer : •The mitotic spindle is an apparatus of microtubules that controls chromosome movement during mitosis

What occurs in meiosis? How is the chromosome number of daughter cells different?

Description : What occurs in meiosis? How is the chromosome number of daughter cells different?

Last Answer : •Gametes are produced by a variation of cell division called meiosis •Meiosis yields nonidentical daughter cells that have only one set of chromosomes, half as many as the parent cell

What is mitosis?

Description : What is mitosis?

Last Answer : •Eukaryotic cell division consists of Mitosis, the division of the nucleus.

Think carefully, now. How many DNA molecules are in each of your somatic cells?

Description : Think carefully, now. How many DNA molecules are in each of your somatic cells?

Last Answer : •In preparation for cell division, DNA is replicated and the chromosomes condense •Each duplicated chromosome has two sister chromatids, which separate during cell division, but a single DNA MOLECULE

Define chromatin.

Description : Define chromatin.

Last Answer : •Eukaryotic chromosomes consist of chromatin, a complex of DNA and protein that condenses during cell division

How many chromosomes in a human gamete?

Description : How many chromosomes in a human gamete?

Last Answer : 23

Name the two types of gametes.

Description : Name the two types of gametes.

Last Answer : •Sperm and eggs

What is a gamete?

Description : What is a gamete?

Last Answer : •Gametes (reproductive cells: sperm and eggs) have half as many chromosomes as somatic cells

Name two types of somatic cells in your body.

Description : Name two types of somatic cells in your body.

Last Answer : Brain and liver

What is the meaning of genome?

Description : What is the meaning of genome?

Last Answer : •All the DNA in a cell constitutes the cell’s genome Compare your genome to that of a prokaryotic cell. •A genome can consist of a single DNA molecule (common in prokaryotic cells) or a number of DNA molecules (common in eukaryotic cells)

What is meant by Digital Cycle Duty Cycle ?

Description : What is meant by Digital Cycle Duty Cycle ?

Last Answer : Duty Cycle = Vibration / Period X 100% . For example , if tw = T / 2 , Duty cycle = 50% .

What is meant by duty-cycle?

Description : What is meant by duty-cycle?

Last Answer : Duty cycle is defined as the ratio of the on time of the chopper to the total time period of the chopper. It is denoted by α.

What is meant by geologic cycle? State the types of weathering and explain brief.

Description : What is meant by geologic cycle? State the types of weathering and explain brief.

Last Answer : Geologic cycle: The most important of these begins with molten magma from within the earth crystallizing into rock then continues with the rock being broken down into soil and that soil then being ... the break down and decay of rock indeed their part in soil formation is of major significance