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Mitochondria

In bacteria, ...

Question

In bacteria, .......... are extensions of plasma membrane which initiate DNA replication and septum formation during cell division

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Solution

In bacteria $m e s o s o m e s - ----------- -$ are extensions of the plasma membrane initiate DNA replication and septum formation during cell division.

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Q. Select the correct option:

Mesosomes are the infoldings of cell membrane, which
(i) are present in both prokaryotic and eukaryotic cells.
(ii) help in cell wall formation, DNA replication and respiration.
(iii) increase the surface area of plasma membrane.

Q. Identify the cell organelle from the given characters;

(i) They help in respiration
(ii) They help in cell wall formation
(iii) They help in DNA replication
(iv) They increase the surface area of the plasma membrane

(v) They are prokaryotic structures

Q. Mesosomes are the infoldings of cell membrane which
(i) are present in both prokaryotic and eukaryotic cells
(ii) help in cell wall formation, DNA replicaiton and respiration
(iii) increase the surface area of plasma membrane

Q. Which of the following sequence of events occur after DNA replication during cell cycle?

I. Nuclear membrane dissolves.
II. Cell size increases.
III. Two daughter cells form.

Q. The following events occur during the various phase of the cell cycle. Fill the blanks with suitable answer against each.
(a)Disintegration of nuclear membrane ________.
(b) Appearance of nucleolus _________.
(c) Division of centromere ___________.
(d) Replication of DNA __________.

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