BIOnline

During _______ the cell grows, its organelles and chromosomes replicate.

• cytokinesis

• mitosis

• interphase

• meiosis

When a cell stop growing, say due to a shortage of nutrients, this will occur in which phase of cell cycle?

• G₁

• G₂

• S

• D

List four phases of mitosis in CORRECT order.

• Anaphase, Telophase, Metaphase and Prophase

• Metaphase, Telophase, Prophase and Anaphase

• Prophase, Anaphase, Telophase and Metaphase

• Prophase, Metaphase, Anaphase and Telophase.

In the mitosis, the number of chromosome sets in daughter cells will be

• half the number in the parent cell

• twice the number in the parent cell.

• the same as in parent cell

• one fourth the number in the parent cell

It is important that the centromere not divide until the end of metaphase because it

• contains the gene that control prophase

• holds the replicated DNA molecules together

• is connected to nuclear membrane

• produces the spindle fibres

How is meiosis related to sexual reproduction?

• Meiosis allows the offspring produced during sexual reproduction to grow and develop

• Meiosis joins together the gametes during sexual reproduction to produce new offspring.

• Meiosis produces the gametes that join to form new offspring during sexual reproduction.

• Meiosis produces the somatic cells that join to form new offspring during sexual reproduction

The number of chromosomes in a fertilized egg is..

• half as many as in an unfertilized egg

• the same as in the sperm

• twice the number as in the sperm

• twice the number as in skin cell

Sister chromatids remain joined at the centromere in all the stages of meiosis listed below EXCEPT

• metaphase I.

• metaphase II

• anaphase I

• anaphase II.

In comparing mitosis and meiosis, which of the following statements is TRUE?

• Meiosis I is more like mitosis than is meiosis II.

• Both cell divisions produce four cells

• Synapsis occurs in both cell divisions.

• Meiosis occurs to germ cells, while mitosis occurs to somatic cells.

The process of replication in the S phase of the cell cycle is connected with which of the followings?

• Doubling of the number of chromatids

• Doubling of the DNA content exclusively.

• Doubling of the number of chromosomes.

• Doubling of the amount of energy in mitochondria.