Weekly L2 Bio Quiz 5: Cell Cycle

Phases of the cell cycle

• S

• G2

• M

• G1

The phase in the cell cycle when DNA/chromosomes replicate

• S

• G2

• M

• G1

Interphase is

• S, G2

• S, G2, M

• S, G1

• S, G1, G2

Cell in engaged in metabolic activity and preparing for mitosis. Chromosomes are not clearly visible in the nucleus as they are unravelled into long chromatin threads

• Prophase

• Metaphase

• Anaphase

• Interphase

Chromosomes line up randomly at the cell equator ( middle of the cell). A spindle network of fibres ( microtubules) has formed across the cell to control division

• Prophase

• Metaphase

• Anaphase

• Telophase

The spindle fibre network retracts and a nuclear membrane forms around each set of chromosomes. Chromosomes start to uncoil and disappear from view.

• Interphase

• Telophase

• Anaphase

• Metaphase

(Cyto)- (kinesis) can be translated to mean:

• Organelle - growth

• cell - growth

• Organelle - movement

• cell - movement

The primary purpose of mitosis is to produce identical daughter cells that:

• have a full set of chromosomes

• produce gametes

• replace cells that have been damaged

• produce new cells for growth

The total number of chromosomes in a human somatic cell are

• 23

• 26

• 43

• 46

What factors affect the rate of mitosis?

• Genetics

• Location of cells

• Environmental factors

• Availability of nutrients and energy