Mitosis

Which best summarizes the purpose of mitosis in multicellular eukaryotes

• increasing variation

• enabling growth

• producing gametes

• encouraging mutations

In the process of DNA replication, the DNA molecule is unzipped down the middle, forming two complimentary halves. During which phase of the cell cycle does this occur?

• G1

• S

• G2

• Metaphase

Which sequence shows the stages of interphase in correct order?

• G1- G2- S

• G1-S-G2

• S-G1-G2

• G2-S-G1

Why is it necessary for the DNA to replicate prior to cell division?

• So that each daughter cell will have half a set of genetic material

• So that each daughter cell will have a complete copy of the genetic material

• So that each daughter cell will have 56 chromosomes

• So that each daughter cell will have 2 sister chromatids

Why do chromosomes have an X-shape?

• Because they are made of two sister chromatids

• Because they are made of two sister centrioles

• Because they are made of two sister centromeres

• Because they are made of two sister chromosomes

What happens during Mitosis?

• The DNA replicates

• The nucleus of the cell divides

• The cytoplasm of the cell divides

• The grows and prepares to divide

How many chromosomes are in a normal human body cell?

• 23

• 46

• 32

• 64

During which phase of Mitosis do the sister chromatids separate

• Prophase

• Metaphase

• Anaphase

• Telopahse

When do the chromosomes line up in the middle of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

During which cell cycle stage does the DNA condense into chromosomes?

• Prophase

• Metaphase

• Anaphase

• Interphase