3.7 Mitosis Flashcards
1
Q
How many daughter cells are produced in mitosis?
A
2
2
Q
How many chromosomes are there in the daughter cell of a human body cell in mitosis?
A
46
3
Q
Interphase
A
- chromosomes invisible
- cell is actively synthesising proteins
- DNA replicates
4
Q
Prophase
A
- chromosomes become visible
- nuclear envelope disintegrates
- nucleolus disappears
5
Q
Metaphase
A
- spindles form
- chromosomes line up in the centre of the cell
6
Q
Anaphase
A
- spindle fibres contract
- chromatids are pulled towards pole
7
Q
Telophase
A
- chromosomes reach poles
- chromosomes become indistinct
- nuclear envelope reforms
- nucleolus reforms
- spindles disintegrates
8
Q
Cytokinesis
A
Division of cytoplasm
9
Q
Binary fission
A
- Replication of (circular) DNA;
- Division of cytoplasm to produce 2 daughter cells;
- Each with single copy of (circular) DNA;
10
Q
Virus replication
A
- attach to host cell on attachment proteins
- injects RNA
- RNA -> cDNA
- using reverse transcriptase
11
Q
Chromatin definition
A
The material that makes up chromosomes. It consists of DNA and the protein histone
