Biology 1406 - Chapter 12
14 Questions
| Total Attempts: 118
BIOLOGY 1406 CHAPTER 12.
Questions and Answers
- 1.What are the purposes of mitotic cell division for multicellular organisms? List three
- 2.What is the concept of genome?
- 3.Define chromatin. How is it different from the concept of DNA?
- 4.What is the difference between chromatin and chromosome in eukaryotic cells?
- 5.Chromosome number is typically an odd number. True or False?
- 6.In cell division, each DNA must be duplicated and each chromosome must be duplicated. True or False?
- 7.What happens in cytokinesis? How is the cytokinesis in animal cells different from that in plant cells?
- 8.What are mitotic spindles made up of? (chemical nature)
- 9.Does mitotic cell division generate genetic diversity?
- 10.Starting with a fertilized egg, a series of five cell divisions would produce in early embryo with how many cells?
- A.
4
- B.
8
- C.
16
- D.
32
- 11.If there are 20 chromatids in a cell, how many centromeres are there?
- A.
10
- B.
20
- C.
40
- D.
5
- 12.Chromosomes first become visible during which phase of mitosis?
- A.
Metaphase
- B.
Telophase
- C.
Anaphase
- D.
Prophase
- 13.Nerve and muscle cells are in _________ phase.
- A.
G0
- B.
G1
- C.
S
- D.
Mitotic
- 14.Why do chromosomes coil during mitosis?
- A.
To increase their potential energy.
- B.
To allow chromosomes to move without becoming entangled and breaking
- C.
To allow chromosomes to fit within the nuclear envelope
- D.
To allow the sister chromatids to remain attached.
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