Question

question 11
the process during which the nucleus of a cell is divided into two identical nuclei is known as
o a fertilization
b cytokinesis
o c mitosis
d meiosis

question 12
our cells have 23 pairs of chromosomes to replicate for cell division. while picking apples in the orchard, you accidentally
cut your hand on a sharp twig. your skin must make new cells to heal the cut.
what part of the cell cycle is shown and how many pairs of chromosomes are in the new formed cells?
o a s - duplication of the dna, 23 pairs chromosomes
b g1 checkpoint - checking cell size and for enough proteins, 46 pairs of chromosomes
o c m - complete cell division, 23 pairs chromosomes
d g2 checkpoint - checking cell size and dna replication, 46 pairs of chromosomes

Explanation:

Question 11

• Fertilization is the union of gametes (sperm and egg).
• Cytokinesis is the division of the cytoplasm, not the nucleus.
• Mitosis is the process where the nucleus of a cell divides into two identical nuclei.
• Meiosis is a type of cell division that reduces the chromosome number by half, for the production of gametes.

• S - phase is for DNA duplication.
• G1 and G2 checkpoints are for checking cell size, nutrients, and DNA replication.
• M - phase (mitosis) is for complete cell division. In mitosis, the daughter cells have the same number of chromosomes as the parent cell. Since the parent cell has 23 pairs of chromosomes, the new - formed cells also have 23 pairs of chromosomes.

Answer:

C. mitosis

Question 12