Identify the INCORRECT statement about cell division:
A. Meiosis results in four haploid cells.
B. Crossing over occurs in mitosis.
C. Mitosis produces two identical daughter cells.
D. Cytokinesis follows nuclear division.
Answer: Option B
Solution (By JKSSB Mock Tests)
Crossing over occurs during prophase I of meiosis, not in mitosis. Mitosis produces identical diploid cells, meiosis reduces chromosome number by half, and cytokinesis divides the cytoplasm.
Explanation:
Calvin cycle occurs in the stroma. Chloroplasts are only in plants/algae; thylakoids stack into grana; cristae are in mitochondria; 70S ribosomes are in stroma, not membrane.
Explanation:
Almost all enzymes are proteins (except ribozymes). They lower activation energy, are highly specific, and cofactors can be inorganic (metal ions) or organic (coenzymes).
Explanation:
Pulmonary ventilation is the mechanical process of moving air in (inspiration) and out (expiration), which is breathing. R correctly defines it.
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