Online Test — Cell Cycle and Cell Division
15 Questions • 15 min • Chapter MCQ
15:00
Question 1 of 15
The orderly sequence by which a cell duplicates and divides is the:
Cell cycle
Carbon cycle
Water cycle
Life cycle
Explanation: The cell cycle is the orderly sequence of duplication and division.
Question 2 of 15
The long preparation stage of the cell cycle is:
M phase
Interphase
Anaphase
Cytokinesis
Explanation: Interphase is the long preparatory stage.
Question 3 of 15
DNA replication takes place during the:
G1 phase
S phase
G2 phase
M phase
Explanation: DNA is synthesised in the S phase.
Question 4 of 15
Cells that stop dividing, like mature nerve cells, enter the:
S phase
G0 stage
Metaphase
Anaphase
Explanation: Non-dividing cells enter the quiescent G0 stage.
Question 5 of 15
Division of the nucleus is called:
Cytokinesis
Karyokinesis
Synapsis
Replication
Explanation: Karyokinesis is nuclear division; cytokinesis is cytoplasmic division.
Question 6 of 15
Mitosis is also called:
Reductional division
Equational division
Binary fission
Budding
Explanation: Mitosis keeps the chromosome number the same — equational division.
Question 7 of 15
Chromosomes line up at the equator of the cell during:
Prophase
Metaphase
Anaphase
Telophase
Explanation: In metaphase, chromosomes align on the metaphase plate.
Question 8 of 15
Sister chromatids separate to opposite poles during:
Prophase
Metaphase
Anaphase
Interphase
Explanation: Anaphase is when chromatids move to opposite poles.
Question 9 of 15
In plant cells, cytokinesis occurs by formation of a:
Cleavage furrow
Cell plate
Spindle
Nucleolus
Explanation: Plant cells form a cell plate that grows into a new wall.
Question 10 of 15
Mitosis is important for all the following EXCEPT:
Growth
Repair of tissues
Halving the chromosome number
Replacing worn-out cells
Explanation: Mitosis keeps the chromosome number constant; meiosis halves it.
Question 11 of 15
Meiosis produces:
Two diploid cells
Four haploid cells
Two haploid cells
Four diploid cells
Explanation: Meiosis gives four haploid daughter cells.
Question 12 of 15
Meiosis is also known as:
Equational division
Reductional division
Direct division
Amitosis
Explanation: Meiosis halves the chromosome number — reductional division.
Question 13 of 15
Pairing of homologous chromosomes in prophase I is called:
Synapsis
Cytokinesis
Replication
Cleavage
Explanation: Synapsis is the pairing of homologous chromosomes.
Question 14 of 15
The exchange of segments between homologous chromosomes is:
Crossing over
Translation
Transcription
Budding
Explanation: Crossing over exchanges segments and creates recombination.
Question 15 of 15
A key role of meiosis is to:
Double the chromosome number each generation
Keep the chromosome number constant across generations
Stop variation
Repair skin
Explanation: By making haploid gametes, meiosis keeps the number constant after fertilisation.