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Cell: The Unit of Life · Question 57

AIPMT 2015MCQEasy📈 Topic in 50% papers+4−1
1

The structures that help some bacteria to attach to rocks and/or host tissues are

  1. mesosomes
  2. holdfast
  3. rhizoids
  4. fimbriae.

Answer

(4) fimbriae.

Solution

As per NCERT, fimbriae are small bristle-like fibres sprouting out of the bacterial cell; in some bacteria they are known to help attach the bacteria to rocks in streams and also to the host tissues.

∵ Mesosomes are infoldings of the plasma membrane, while holdfast and rhizoids are attaching structures of algae and bryophytes, they are not the answer.

Answer: (4)

AIPMT 2015

Keep practising — Cell: The Unit of Life

2

Chromatophores take part in

  1. movement
  2. respiration
  3. photosynthesis
  4. growth.
AIPMT 2015
3

Balbiani rings are sites of :

  1. Polysaccharide synthesis
  2. Lipid synthesis
  3. RNA and protein synthesis
  4. Nucleotide synthesis
AIPMT 2015
4

Match the columns and identify the correct option.

  1. (a) (iv), (b) (ii), (c) (i), (d) (iii)
  2. (a) (iv), (b) (iii), (c) (i), (d) (ii)
  3. (a) (iii), (b) (iv), (c) (i), (d) (ii)
  4. (a) (iii), (b) (i), (c) (iv), (d) (ii)
AIPMT 2015
5

Which of the following structures is not found in a prokaryotic cell?

  1. Mesosome
  2. Nuclear envelope
  3. Ribosome
  4. Plasma membrane
AIPMT 2015
6

Cellular organelles with membranes are -

  1. endoplasmic reticulum, ribosomes and nuclei
  2. lysosomes, Golgi apparatus and mitochondria
  3. nuclei, ribosomes and mitochondria
  4. chromosomes, ribosomes and endoplasmic reticulum
AIPMT 2015
7

Which of the following are not membrane-bound ?

  1. Ribosomes
  2. Mesosomes
  3. Lysosomes
  4. Vacuoles
AIPMT 2015
8

DNA is not present in :

  1. Nucleus
  2. Chloroplast
  3. Mitochondria
  4. Ribosomes
AIPMT 2015 (Cancelled)
9

Nuclear envelope is a derivative of :

  1. Membrane of Golgi complex
  2. Smooth endoplasmic reticulum
  3. Rough endoplasmic reticulum
  4. Microtubules
AIPMT 2015 (Cancelled)
10

The structures that are formed by stacking of organized flattened membranous sacs in the chloroplasts are

  1. Stroma lamellae
  2. Cristae
  3. Stroma
  4. Grana
AIPMT 2015 (Cancelled)
11

Select the correct matching in the following pairs :

  1. Rough ER – Oxidation of fatty acids
  2. Smooth ER – Oxidation of phospholipids
  3. Rough ER – Synthesis of glycogen
  4. Smooth ER – Synthesis of lipids
AIPMT 2015 (Cancelled)

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