Biology Chapter 3

1. What are the proteins that can be found in contractile ring?

• A) myosin and actin

• B) cellulose and pectin

• C) myosin and pectin

• D) actin and glycogen

2. What are the number of pairs of chromosomes in human somatic cells?

• A) 11

• B) 23

• C) 46

• D) 92

3. In which phase the cytoplasm volume of the cells increases?

• A) G1

• B) S phase

• C) G2

• D) Cytokinesis

4. In which cell stages the number of chromosomes is reduced to half of its parent's number of chromosomes?

• A) Metaphase I

• B) Anaphase

• C) Anaphase I

• D) Telophase

5. The crossing over occured between

• A) sister chromatids

• B) chiasma

• C) chromatin

• D) non-sister chromatids

6. Diakinesis occurs when

• A) Homologous chromosomes started to pair up

• B) Crossing over occured

• C) Bivalents started to split up but remain at chiasmata

• D) Bivalents separated completely

7. What would happen to the DNA if the damage is irreparable?

• A) DNA replication will occur

• B) The cell will pause at G2

• C) The cell will undergo apoptosis

• D) The cell will undergo cytokinesis

8. What are the arrangements of the chromosomes during metaphase I

• A) aligned side by side

• B) aligned separately

• C) overlapped alignment

• D) the chromosomes are not aligned

9. Choose the correct statements about mitosis

I Crossing over occur during prophase

II The daughter cells produced are diploid

III Cytokinesis occur only once

IV The daughter cells produced are not

genetically identical to its parents

• A) I and II

• B) II and III

• C) III and IV

• D) II and IV

10. Choose the false statement

• A) Cytokinesis in plant cells begins outer inwards

• B) The daughter cells produced from meiosis is not genetically identical to its parents

• C) Aster formed in animal cells

• D) Each poles received mixture of set of parental chromosomes due to independent assortment