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NEET Biology Practice Test

Ten questions on cells, genetics and human physiology, written to match the NCERT basics that NEET Biology is built on.

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  1. Question 1 of 10

    Which cell organelle is the main site of ATP production in aerobic respiration?

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    Answer: Mitochondrion. Mitochondria carry out aerobic respiration and produce most of the cell's ATP.

  2. Question 2 of 10

    Where does protein synthesis take place in a cell?

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    Answer: Ribosomes. Ribosomes read messenger RNA and join amino acids to build proteins.

  3. Question 3 of 10

    In which stage of mitosis do chromosomes line up at the equator of the cell?

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    Answer: Metaphase. Chromosomes align at the metaphase plate during metaphase. They separate in anaphase.

  4. Question 4 of 10

    How many chromosomes are found in a normal human body cell?

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    Answer: 46. Human body cells are diploid, with 46 chromosomes in 23 pairs. Gametes have 23.

  5. Question 5 of 10

    In DNA, adenine pairs with which base?

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    Answer: Thymine. In DNA, adenine pairs with thymine and guanine pairs with cytosine. Uracil replaces thymine in RNA.

  6. Question 6 of 10

    Which cells of the pancreas secrete insulin?

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    Answer: Beta cells. Beta cells in the islets of Langerhans secrete insulin. Alpha cells secrete glucagon.

  7. Question 7 of 10

    What is the structural and functional unit of the kidney?

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    Answer: Nephron. The nephron filters blood and forms urine. Each human kidney has about a million of them.

  8. Question 8 of 10

    Where do the light reactions of photosynthesis occur?

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    Answer: Thylakoid membranes. Light reactions occur in the thylakoid membranes of chloroplasts. The Calvin cycle happens in the stroma.

  9. Question 9 of 10

    A deficiency of vitamin C causes which disease?

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    Answer: Scurvy. Scurvy is caused by a lack of vitamin C. Rickets comes from a lack of vitamin D.

  10. Question 10 of 10

    Which enzyme in saliva begins the digestion of starch?

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    Answer: Salivary amylase. Salivary amylase starts breaking starch down into maltose in the mouth.

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