Cell Cycle, mitosis And Meiosis Flashcards Preview

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Flashcards in Cell Cycle, mitosis And Meiosis Deck (10):
1

-What is a diploid cell

-How many sets of chromosomes

A diploid cell is a typical human body cell

2 complete sets of chromosomes

(23 pairs)
(46 of each)

2

What is a haploid cell

How many sets of chromosomes

Haploid cells are sperm or egg cells (gametes or sex cells)

One set of each chromosome

23 chromosomes

3

Purpose of fertilisation?

To combine two haploid cells to form a diploid cell

4

Purpose of mitosis?

To make all the cells in our bodies

5

Purpose of meiosis

Just makes gametes or sex cells

6

Difference between mitosis and cytokinesis?

Mitosis being the division of the nucleus

Cytokinesis being the division of the rest of the cell (mitochondria, cytoplasm etc..)

7

Describe the G1 phase

-First stage of interphase
-Lasts 10 hours
Cells prepare for DNA replication (increase in size, production of new organelles, cytoplasm, formation of tRNA and mRNA)

8

Describe S phase of interphase

-Lasts 9 hours
-DNA replication (semi-conservative)

9

Describe G2 phase of interphase

Spindle protein formed, mitochondria and chloroplasts (if present), and cellular proteins are synthesised

10

Name the 4 stages of mitosis in order

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase