Which of the following statement(s) is/are true about the nucleus?

A) It is present only in eukaryotic cells.
B) It is bounded by a single membrane.
C) It contains chromosomes.
D) It synthesizes lipids.

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Solution

The correct answer is (A) and (C).

Nucleus is a cell organelle present only in eukaryotic cells. It is a double membrane bound organelle which contains the heredity material - DNA. DNA is super coiled inside the nucleus and forms structures called chromosomes.

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Which of the following statement is not true for plasma membrane?

(a) It is present in both plant and animal cell

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Question 34

Eukaryotic cells have organelles which may

(a) not be bound by a membrane

(b) bound by a single membrane

Group the various sub-cellular organelles into these three categories.

incorrect

\begin{matrix} Prokaryotic Cell & Eukaryotic Cell (1) & Nuclear region is not surrounded by a nuclear membrane and is known as nucleoid & Nucleus is well- defined and is surrounded by a nuclear membrane (2) & Size is generally small (1 - 10 μ m) & Size is generally large (5 - 100 μ m) (3) & It contains more than one chromosome & It contains single chromosome (4) & Membrane-bound organelles are absent & Membrane-bound organelles are present \end{matrix}

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