Cell Cycle Test Review

What is the role of the spindle fibers during mitosis?

• They helps separate the chromosomes

• They performs DNA synthesis

• They breaks down the nuclear membrane

• They duplicates DNA

Which pair matches the phase of the cell cycle to the correct cellular process that occurs during that phase?

• S phase --Cell division

• M phase-- Cell growth

• G1 phase --DNA replication

• G2 phase--preparation for Mitosis

Which pair of numbers shows the number of cells before and after meiosis II?

• 4 cells before and 4 cells after

• 1 cell before and 2 cells after

• 1 cell before and 4 cells after

• 2 cells before and 4 cells after

Brandy knows that chromosomes behave differently in meiosis and mitosis. What do chromosomes do in meiosis but NOT in mitosis?

• Chromosomes condense or shorten up before cell division begins

• Each chromosomes makes a copy

• Chromosomes line up in the middle of the cell

• The homologous chromosomes form pairs

The picture depicts what stage of meiosis?

• Metaphase I

• Metaphase II

• Prophase I

• Anaphase I

Which phases of the cell cycle represent interphase?

• Phases S, G2 & M

• Phases M, G1 & S

• Phases G1, S & G2

• Phases G1 & G2

In mitosis, during which phase do chromosomes first become visible?

• prophase

• interphase

• telophase

• metaphase

During human reproduction, two sex cells must combine to form a fertilized egg knows as a zygote. Which of the following statements correctly describes the genetic makeup of the sperm cell produced by the human male?

• Each cell has pairs of chromosomes & the cells are usually genetically different

• Each cell has half the normal number of chromosomes & the cells are usually genetically identical

• Each cell has pairs of chromosomes & the cells are usually genetically identical

• Each cell has half the normal number of chromosomes & the cells are usually genetically different

Which one of the following statements best describes the relationship between tumor suppressor proteins (TSP) and cancer?

• When activated, TSPs will cause uncontrolled cell division

• Mutation to a TSP will cause a cell to undergo apoptosis

• Mutation of a TSP can cause cancer

• TSPs usually become inactivated during the teenage years.

The illustration represents a summary of both meiosis and mitosis. Compare and contrast these two types of cell division, Note the cells labeled with letters A & B in the illustration. What is the chromosome number associated with each type of cell.

• Cell A is 2N; Cell B is 2N

• Cell A is 1N; Cell B is 2N

• Cell A is 1N; Cell B is 1N

• Cell A is 2N; Cell B is 1N