Question

part ii - multiple choice

1. which of the following is the correct order of mitosis?

a) prophase - anaphase - telophase - metaphase
b) prophase - metaphase - anaphase - telophase
c) telophase - metaphase - prophase - anaphase
d) anaphase - prophase - telophase - metaphase

1. during which phase do the sister chromatids separate?

a) prophase
b) metaphase
c) anaphase
d) telophase

1. which structure helps pull the chromosomes apart?

a) nucleolus
b) spindle fibers
c) centrioles
d) nuclear envelope

Explanation:

1. Mitosis has a specific order: Prophase - Metaphase - Anaphase - Telophase. Prophase is the start where chromatin condenses, metaphase is when chromosomes line up at the equator, anaphase is when sister - chromatids separate, and telophase is the end with the formation of two nuclei.
2. Sister chromatids separate during anaphase as the spindle fibers pull them to opposite poles.
3. Spindle fibers attach to the chromosomes at the kinetochores and help pull the chromosomes apart during anaphase.

Answer:

1. b) Prophase - Metaphase - Anaphase - Telophase
2. c) Anaphase
3. b) Spindle fibers