Gr 10 Cell division

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Gr 10 Cell division

Revision on Topic 3

Email address *

Name *

Surname *

Teacher *

Mrs Arlow

Mrs Clulow

Mrs Vissian

Ms Viljoen

1. What do we call identical strands of a chromosome produced through the replication of the genetic material? *

Chromatids

Centromeres

Centrioles

Alelles

2. What is the role of mitosis? *

Growth of an organism

Repair of damaged cells

Replacement of dead cells

All of the above

3. A mass of cells, resultant of uncontrolled mitosis, that may be harmful to the organism in which they occur. *

Tumour

Malignant tumour

Benign tumour

Metastasis

4. The collective term used to refer to substances that cause cancer. *

Chemicals

Radiation

Carcinogens

Viruses

5. Which of the following is an early detection procedure for cancers? *

Chemotherapy

Mammogram

Surgery

Radiation

6. Up to 90% of cell's life is spent in... *

Cytokinesis

Mitosis

Interphase

The cell cycle

7. Refer to the diagram below and identify the stage of mitosis depicted. *

Telophase

Anaphase

Metaphase

Interphase

8. Refer to the diagram below and identify the stage of mitosis depicted. *

Telophase

Anaphase

Metaphase

Prophase

9. Study the following representations of the phases of cell division below. By making use of the letters only, arrange the phases into the correct sequence. *

C, E, D, B, A

C, B, E, A, D

D, A, C, B, E

A, E, B, C, D

10. Referring to the diagram provided above in question 9. The correct labels for parts 2, 4 and 8 respectively are... *

centromere, nuclear membrane, chromatin network

chromosome, spindle fibre, nucleus

centromere, spindle fibre, chromosomes

chromatid, nuclear membrane, nucleolus

11. Referring to the diagram provided in question 9. The correct labels for parts 7, 9 and 10 respectively are... *

cell wall, nucleus, pole

invagination, nucleolus, centriole

cleavage furrow, centromere, spindle fibre

cell membrane, chromatin network, centriole

12. The role of the spindle in mitosis is... *

to join two chromatids together

to enclose the heredity information

to attach to chromosomes, contract and pull the chromosomes to the poles

to attach to the membrane and pull it towards the poles

Other:

13. The diagram shows some plant cells in different stages of the cell cycle. Name the phases of cell division P, Q, R and S in that order. *

prophase, metaphase, anaphase, late telophase

anaphase, late prophase, early telophase, metaphase

metaphase, telophase, prophase, anaphase

anaphase, early telophase, metaphase, prophase

14. If a mouse has 20 chromosomes in the nucleus of a cell. How many chromosomes will the two cells that result from mitosis each have? *

15. Does mitosis constantly occur in cells? *

yes

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