CSIR UGC NET JRF Practice Tests on Cell Biology

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1. Which of the following statements about mitochondria is NOT correct?
They serve as sites for cellular respiration.
They are enclosed by a double membrane.
They are the sites where most of the cell’s ATP is produced.
They are found in animal cells only; plant cells have chloroplasts instead.
2. What would happen to a human red blood cell if it was placed in distilled water?
It would shrivel.
It would plasmolyze.
It would lyse.
It would not be affected.
3. Which of the following statements about cell structure is NOT correct?
Plant cells have chloroplasts, whereas animal cells do not.
Plant cells have cell walls, where as animal cells do not.
Ribosomes are the main sites of energy production for the cell.
Many cellular organelles are interrelated through an endomembrane system.
4. Which of the following statements is correct?
The product of transcription is DNA.
The product of transcription is a polypeptide.
The product of translation is DNA.
The product of transcription is mRNA.
5. Which of the following pairs does NOT represent a correct relationship?
sugar; carbohydrate
enzyme; lipid
fat; lipid
starch; carbohydrate
6. An animal organism with a diploid number of chromosomes equal to 30 would normally
not be able to undergo meiosis because gametes would end up with an odd number of chromosomes.
produce four gametes with 15 chromosomes each during meiosis.
produce four gametes with 30 chromosomes each during meiosis.
produce two gametes with 15 chromosomes each during meiosis.
7. Identify the correct eukaryotic cell cycle.
G1 to S to G2 to M to cytokinesis
G1 to G2 to M to S to mitosis
G2 to M to S to G1 to cytokinesis
G1 to G2 to S to M to karyokinesis
8. If the concentration of a solute differs across a membrane permeable only to water, water will move across the membrane by
facilitated transport
osmosis
active transport
exocytosis
9. Which of the following stages of the cell cycle occurs immediately prior to mitosis?
G2
S
M
G1
10. Which of the following is NOT involved in the synthesis of proteins?
rough ER
smooth ER
Golgi body
ribosomes
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