Biology Help

Question 1Select one answer.10 pointsAll of the following pairings between a cell cycle phase and what happens during it are correct, except

1.  M- the cell is undergoing mitosis
2.  G1- the cell is growing and increasing its mass
3.  S- the cell is dividing
4.  G0- the cell is mature and does not cycle anymore.
5.  G2- the cell is preparing to divide

Question 2Select one answer.10 pointsIf you found a single cell with two nuclei, what explanation might be true?

1.  The cell remained in interphase continuously!
2.  Cytokinesis occurred without mitosis!
3.  Mitosis must have happened twice!!
4.  Mitosis occurred without cytokinesis!

Question 3Select one answer.10 pointsIf a germ cell has 20 chromosomes, how many chromosomes will you find in the daughter cells, after meiosis?

1.  10
2.  20
3.  30
4.  40

Question 4Select one answer.10 pointsSomatic cells are reproduced during the process of _____________:

1.  meiosis
2.  fusion
3.  mitosis
4.  fission

Question 5Select one answer.10 pointsImagine a hypothetical organism (critter). A DIPLOID cell from this organism has 20 chromosomes. How many chromosomes would be found in a GERM CELL of this organism?

1.  20
2.  10
3.  40
4.  46

Question 6Select one answer.10 pointsDuring which stage of the cell cycle is the DNA replicated?

1.  Mitosis
2.  S
3.  Cytokinesis
4.  G2

Question 7Select one answer.10 pointsA sperm cell is an example of:

1.  a somatic cell
2.  a germ cell
3.  a zygote
4.  a gamete

Question 8Select one answer.10 pointsIf a somatic cell has 24 chromosomes, how many chromosomes will you find in the daughter cells, after mitosis?

1.  48
2.  36
3.  24
4.  12

Question 9Select one answer.10 pointsDNA that is tightly wound around histone proteins is the easiest to divide. Is this statement true or false?

1.  False
2.  True

Question 10Select one answer.10 pointsDuring the S phase of the cell cycle, DNA is replicated. What form would you expect the DNA to be in?

1.  It would be tightly wound around histone proteins as chromosomes.
2.  It would be in a loose pile.
3.  It would be made of separate nucleotides just floating in the nucleus.