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Cell: The Unit of Life · Question 88

AIPMT 2012 (Prelims)MCQMedium📈 Topic in 50% papers+4−1
1

Which one of the following does not differ in E. coli and Chlamydomonas ?

  1. Chromosomal Organization
  2. Cell wall
  3. Ribosomes
  4. Cell membrane

Answer

(4) Cell membrane

Solution

E. coli is a prokaryote (bacterium) and Chlamydomonas is a eukaryote (green alga).

Chromosomal organisation: naked circular DNA (nucleoid) in E. coli ⇒ linear chromosomes with histones inside a nucleus in Chlamydomonas.

Cell wall: peptidoglycan in E. coli ⇒ cellulose in Chlamydomonas.

Ribosomes: 70S in E. coli ⇒ 80S in the cytoplasm of Chlamydomonas.

∵ As per NCERT, the cell membrane in all cells has the same basic lipid bilayer structure with proteins (fluid mosaic model), it does not differ.

Answer: (4)

AIPMT 2012 (Prelims)

Keep practising — Cell: The Unit of Life

2

Which one of the following is not considered as a part of the endomembrane system ?

  1. Vacuole
  2. Lysosome
  3. Golgi complex
  4. Peroxisome
AIPMT 2011 (Mains)
3

The figure below shows the structure of a mitochondrion with its four parts labelled (A), (B), (C) and (D). Select the part correctly matched with its function. [Figure]

  1. Part (B) : Inner membrane – forms infoldings called cristae
  2. Part (C) : Cristae – possess single circular DNA molecule and ribosomes
  3. Part (A) : Matrix – major site for respiratory chain enzymes
  4. Part (D) : Outer membrane – gives rise to inner membrane by splitting
AIPMT 2011 (Mains)
4

In eubacteria, a cellular component that resembles eukaryotic cell is

  1. plasma membrane
  2. nucleus
  3. ribosomes
  4. cell wall
AIPMT 2011 (Prelims)
5

Which one of the following organisms is not a eukaryote?

  1. Paramecium caudatum
  2. Escherichia coli
  3. Euglena viridis
  4. Amoeba proteus
AIPMT 2011 (Prelims)
6

Peptide synthesis inside a cell takes place in :

  1. Chromoplast
  2. Ribosomes
  3. Chloroplast
  4. Mitochondria
AIPMT 2011 (Prelims)
7

Important site for formation of glycoproteins and glycolipids is :

  1. Plastid
  2. Lysosome
  3. Golgi apparatus
  4. Vacuole
AIPMT 2011 (Prelims)
8

An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called -

  1. Cytoskeleton
  2. Endoplasmic Reticulum
  3. Thylakoid
  4. Plasmalemma
AIPMT 2010 (Mains)
9

Identify the components labelled A, B, C and D in the diagram below from the list (i) to (viii) given along with – [Figure] Components : (i) Cristae of mitochondria (ii) Inner membrane of mitochondria (iii) Cytoplasm (iv) Smooth endoplasmic reticulum (v) Rough endoplasmic reticulum (vi) Mitochondrial matrix (vii) Cell vacuole (viii) Nucleus The correct components are :

  1. (A) (v), (B) (iv), (C) (viii), (D) (iii)
  2. (A) (i), (B) (iv), (C) (viii), (D) (vi)
  3. (A) (v), (B) (i), (C) (iii), (D) (ii)
  4. (A) (vi), (B) (v), (C) (iv), (D) (vii)
AIPMT 2010 (Mains)
10

Membrane-bound organelles are absent in

  1. Saccharomyces
  2. Streptococcus
  3. Chlamydomonas
  4. Plasmodium
AIPMT 2010 (Prelims)
11

Algae have cell wall made up of:

  1. cellulose, galactans and mannans
  2. hemicellulose, pectins and proteins
  3. pectins, cellulose and proteins
  4. cellulose, hemicellulose and pectins
AIPMT 2010 (Prelims)

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