Topic Test : Asexual Cell Division (Mitosis) [answers given below]
True/False
1. Centrioles are required for asexual cell division?
2. Mitotic spindle fibers attach to the telomere of each chromosome?
3. Mitosis itself lasts about 24 hours?
Multiple Choice
4. The stage of the asexual cell cycle in which DNA is replicated is?
a) G-1 b) S c) G-2 d) mitosis
e) choose this answer if none of the above is correct
5. The meiotic stage when chromatin first condenses and chromosomes appear visible?
a) prophase
b) metaphase c) anaphase
d) telophase II
e) choose this answer if none of the above is correct
6. The physical division of an asexually dividing plant cell into two domains (halves)?
a) requires Golgi vesicles
b) forms a cell plate
c) creates a new primary cell wall
d) forms new plasma membranes
e) choose this answer if all of the above are correct
Short Answer/Problem Solving
7. The plant Psium sativum has 18 chromosomes in its somatic cells. How many chromatids will be present in prometaphase?
8. What is it that the process of mitosis separates at the chromosomal level?
END ( ANSWERS BELOW)
Topic Test : Answers (Asexual Cell Division - Mitosis)
True/False
1. F.
Plant cells do not contain centrioles, yet divide asexually.
2. F.
Spindle microtubules attach to the kinetochore of a chromosome's centromer.
3. F.
The length of mitosis is only a short portion of the whole cell cycle. Its length is quite
variable, but commonly lasts only a few hours.
Multiple Choice
4. DNA is replicated during the S phase.
5. Chromatin first condenses into chromosomal bodies during early prophase.
6. The physical division of an asexually dividing plant cell into two domains
(halves)
requires all
of these things to happen. The Golgi vesicles provide membrane
pieces and glycoproteins for a cell plate, cell wall, and the new plasma membrane.
Short Answer/Problem Solving
7. If
the plant Psium sativum has 18 chromosomes in its somatic cells, then in
mitotic prometaphase one should see 18 bivalent homologues,
each with two chromatids.
8. Mitosis
separates the chromatids of each homologue of homologous pairs of chromosomes.
As you will see in the next topic on meiosis, sexual cell division separates
homologues
first in meiosis I and then chromatids.