Chapter 12-Cell Cycle

Question 1

The cell cycle

Answer 1

The life of a cell from the time it is first formed during cell division of a parent cell until it’s own division into 2 daughter cells

Question 2

Cohesins

Answer 2

Protein complexes that bind sister chromatids along their entire length after duplication

Question 3

Centromere

Answer 3

A region of chromosomal DNA where the chromatid is attached most closely to its sister chrimatid

Question 4

Centrosomes

Answer 4

Regions in animal cells that organise the microtubules of the spindle. Each centrosome contains two centrioles

Question 5

Protein kinases

Answer 5

Enzymes that activate or de-activate other proteins by phosphorylating them

Question 6

Metastasis

Answer 6

The spread of cancer cells to locations distant from their original site

Question 7

Evidence of the evolution of mitosis

Answer 7

Proteins involved in binary fission are related to eukaryotic Tubulidentata and actin

Question 8

Kinetochore

Answer 8

A specialised protein structure at the centromere(prometaphase)

Question 9

The cell cycle control system

Answer 9

A cyclically operating set of molecules in the cell that triggers and coordinates key events in the cell cycle

Question 10

Density dependent inhibition

Answer 10

The effect of an external physical factor on cell division in which crowded cells stop dividing

Question 11

Anchorage dependence

Answer 11

For animal cells to divide, they must be attached to a substratum such as the inside of a culture flask or the extra cellular matrix of a tissue