In an adult human body, the following type of cell does not undergo Liver Blood

Question

In an adult human body, the following type of cell does not undergo Liver Blood Neuron Skin None of the above Cells that are in a nondividing state are in which phase? G_0 G_2 G_1 S M What causes the decrease in the amount of cyclin at a specific point in the cell cycle? an increase in production once the restriction point is passed the cascade of increased production once its protein is phosphorylated by Cdk the changing ratio of cytoplasm to genome its destruction by a process called ubiquitylation the binding of PDGF to receptors on the cell surface Which of the following is true concerning cancer cells? They do not exhibit density-dependent inhibition when growing in culture. When they stop dividing, they do so at random points in cycle. They are not subject to cell cycle controls. B and C only A, B, and C Kinases are enzymes that catalyze: addition of phosphate group in a molecule. removal of a phosphate group from a molecule. addition of a glucose addition of sulfates. synthesis of DNA.

Explanation / Answer

1.c Neurons do not undergo mitosis. The other 3 cells which do not undergo mitotic division include cardiac cells, adipose tissue, and skeletal muscle cells. They are mature permanent cells.

2.a Nondividing cells are in Go phase. It is when a cell takes rest/ cell cycle is arrested, When an appropriate signal is received by cell, the cell re-enters cell cycle at G1 phase.

3. The cyclin is destroyed by the ubiquitin pathway. An enzyme is activated by cyclin-CDK complex which degradesdestroys the cyclin.

5. Answer a.

Kinases are involved in the addition of phosphate group.

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