Match each term below with its definition: a. Programmed cell death; it’s why you don’t have...

Match each term below with its definition:

	a. Programmed cell death; it’s why you don’t have webbed fingers and toes.
	b. This protein can stop the cell cycle and initiate DNA repair if necessary.
	c. Once the cell passes this, it is committed to start preparations for cell division.
	d. Causes cells to stop dividing when they come in close contact with other cells.
	e. An epidermal version helps repair damage in the skin.
____ 6. cyclin	f. A cap on the end of a chromosome that shortens as a cell ages.
____ 7. kinase	g. Occurs after metaphase, to make sure the chromosomes are attached to the spindle.
____ 8. growth factor	h. An enzyme needed for the cell cycle to continue.
____ 9. hormone	i. A protein whose levels increase and decrease throughout the cell cycle.
____ 10. telomere	j. A chemical such as estrogen that can signal cells to divide.

Expert Solution

Answer:

6. Cyclin= i. A protein whose levels increase and decrease throughout the cell cycle.

Explanation: Cyclins are the regulatory proteins that play a major role in progression of cell cycle. Cyclins are specific for each phase. For example: The levels of S-cyclin increases during G1 phase promotes the cell to enter S-phase.

7. Kinase = h. An enzyme needed for the cell cycle to continue.

Explanation: Kinases are the catalytic enzyme that phosphorylates various proteins essential for cell cycle to continue.

8. Growth factor = e. An epidermal version helps repair damage in the skin.

Explanation: Epidermal growth factor binds to epidermal growth factor receptor on the skin cells and gives signals to repair the damaged skin.

9. hormone = j. A chemical such as estrogen that can signal cells to divide.

.Explanation: Hormones are chemical substances that are secreted by various glands in the body . They are essential for growth and development. For example: Estrogen is an hormone that signals the cell to divide.

10. Telomere = f. A cap on the end of a chromosome that shortens as a cell ages.

Explanation: Telomeres are present at the ends of the chromosome and protects the ends. Due to repeated cell division the length of the telomers shortens leading to aging.

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