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The figure given below shows the structure of a chloroplast with its four parts labelled as A, B, C and D.

Select the part that is incorrectly matched with its function.

(a)A: Thylakoid—contains chlorophyll pigment in its membrane
(b)B: Granum—site of light-independent phase
(c)C: Stroma—contains enzymes required for synthesis of carbohydrates and proteins
(d)D: Inner membrane—Relatively less permeable than the outer membrane

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Important Questions on Cell: The Unit of Life
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Choose the wrongly matched pair:

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In 70S and 80S ribosomes, ‘S’ as a unit that stands for which of the following?

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Which of the following cellular part is incorrectly described?

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How many of the following features are true for centriole?
(i) A non-membrane-bound cell organelle that helps in cell division.
(ii) Its core is called an axoneme.
(iii) Has nine microtubule doublets at the periphery.
(iv) Has a cartwheel organisation.
(v) Shows (9 + 0) organisation of microtubules.
(vi) Surrounded by a microtubule generator.

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RNA is found in all of the following structures, except:

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The cytoskeleton is a proteinaceous network of fibres in the cytoplasm involved in which of the following?

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Microtubules are made up of

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The organelles with an internal cross-section showing the characteristic (9 + 2) morphology are
