Question

1. which phase follows metaphase in mitosis?

• a. telophase
• b. anaphase
• c. prophase
• d. interphase

1. what is apoptosis?

• a. cell growth
• b. cell division
• c. programmed cell death
• d. dna replication

1. which structure pulls chromatids apart?

• a. centriole
• b. spindle fibers
• c. nucleus
• d. ribosome

1. which phase of mitosis is the final stage?

• a. prophase
• b. metaphase
• c. telophase
• d. anaphase

1. which enzyme unzips dna during replication?

• a. ligase
• b. helicase
• c. polymerase
• d. primase

true/false questions (1 point each):
t1. mitosis results in genetically identical cells.
a. true
b. false

Explanation:

• Question 6: The order of mitosis phases is prophase, metaphase, anaphase, telophase. So after metaphase is anaphase.
• Question 7: Apoptosis is defined as programmed cell death. Cell growth is related to an increase in cell size, cell division includes processes like mitosis/meiosis, and DNA replication is for copying DNA.
• Question 8: Spindle fibers attach to chromatids and pull them apart during anaphase of mitosis. Centrioles help organize spindle fibers but don't directly pull chromatids. Nucleus contains DNA and ribosome is for protein synthesis.
• Question 9: The final stage of mitosis is telophase where new nuclear envelopes form around the separated chromosomes.
• Question 10: Helicase enzyme unwinds and unzips the DNA double - helix during replication. Ligase joins DNA fragments, polymerase synthesizes new DNA strands, and primase makes RNA primers.
• T1: Mitosis produces two daughter cells that are genetically identical to the parent cell as they have the same number and kind of chromosomes.

Answer:

1. B. Anaphase
2. C. Programmed cell death
3. B. Spindle fibers
4. C. Telophase
5. B. Helicase

T1. A. True