Cell Continuity – Mitosis & Meiosis
1 True or False. A sperm contains the haploid number of chromosomes.
TRUE
2 Which structures in sperm and egg nuclei are responsible for biological inheritance?
Chromosomes or genes or DNA
3 For what purpose do single-celled organisms use mitosis?
Reproduction
4 How many cells are formed when a cell divides by mitosis?
Two
5 The haploid number of chromosomes is found in the human egg and sperm. Explain
the underlined term.
n / 23 / half of diploid / single set of chromosomes / contains one of each type or pair of
chromosomes / reference to meiosis, gamete, sex cell
6 Complete the following sentence. If the diploid number in a cell is 46, the haploid
number is ...
23
7 True or False. Mitosis is the division of a nucleus into two identical nuclei.
TRUE
8 True or False. The cells produced by meiosis are haploid.
TRUE
9 True or False. The cells produced by mitosis are identical.
TRUE
10 True or False. Meiosis gives rise to variation.
TRUE
11 True or False. Mitosis always produces four new cells.
FALSE
12 True or False. Meiosis is never involved in gamete formation.
FALSE
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13 True or False. Single-celled organisms use mitosis for reproduction.
TRUE
14 State a function of mitosis in each of the following: (i) Single-celled organisms, (ii)
Multicellular organisms
(i) Reproduction; (ii) Growth or (cell) replacement or repair or renewal or spore
formation
15 Select the correct term from the following list to match the term Gamete: liver,
variation, lipid, haploid, sap
Haploid
16 When a cell divides by mitosis how many new cells will there be?
Two
17 Genes are found on what structures in a cell nucleus?
Chromosome (allow chromatid) (Do not allow DNA)
18 Give two possible causes of cancer.
Any two causes e.g. Radiation / Smoking …
19 Explain, in terms of what happens to body cells, what is meant by the term cancer.
Control over cell division is lost
20 Tissues grow by cell division. Name the type of cell division by which tissues grow.
Mitosis
21 What is the function of spindle fibres during cell division?
To contract / to separate chromosomes / chromatid / to attach
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