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Cell: The Unit of Life · Question 118

AIPMT 2004MCQEasy📈 Topic in 25% papers+4−1
1

In chloroplasts, chlorophyll is present in the :-

  1. Outer membrane
  2. Inner membrane
  3. Thylakoids
  4. Stroma

Answer

(3) Thylakoids

Solution

As per NCERT, the space inside the inner membrane of the chloroplast (stroma) contains flattened membranous sacs called thylakoids, arranged in stacks (grana).

⇒ The chlorophyll pigments are present in the thylakoids, where the light reaction takes place.

⇒ The stroma contains the enzymes for the synthesis of sugars (dark reaction).

Answer: (3)

AIPMT 2004

Keep practising — Cell: The Unit of Life

2

Chromosomes in a bacterial cell can be 1–3 in number and

  1. are always circular
  2. are always linear
  3. can be either circular or linear, but never both within the same cell
  4. can be circular as well as linear within the same cell.
AIPMT 2003
3

In bacteria, plasmid is

  1. extra chromosomal material
  2. main DNA
  3. non functional DNA
  4. repetitive gene.
AIPMT 2002
4

Ribosomes are produced in:

  1. Mitochondria
  2. Golgi body
  3. Nucleolus
  4. Cytoplasm
AIPMT 2002
5

In fluid mosaic model of plasma membrane

  1. Phospholipids form a bimolecular layer in middle part
  2. Upper layer is non-polar and hydrophilic
  3. Proteins form a middle layer
  4. Polar layer is hydrophobic
AIPMT 2002
6

Difference in gram positive and gram negative bacteria is due to

  1. cell wall
  2. cell membrane
  3. ribosome
  4. cytoplasm
AIPMT 2001
7

Element necessary for the middle lamella is

  1. K
  2. Cu
  3. Ca
  4. Zn
AIPMT 2001
8

Microtubules are absent in:

  1. Spindle fibres
  2. Mitochondria
  3. Centriole
  4. Flagella
AIPMT 2001
9

Spindle fibres unite with which structure of chromosomes?

  1. Chromocentre
  2. Chromomere
  3. Kinetochore
  4. Centriole
AIPMT 2000
10

Lysosome contains:

  1. Reductive enzymes
  2. Oxidative enzymes
  3. Anabolic enzymes
  4. Hydrolytic enzymes
AIPMT 2000
11

Which of the following ribosomes are engaged in protein synthesis in animal cell?

  1. Ribosomes of only nucleolus and cytosol
  2. Ribosomes which occur on nuclear membrane and E.R.
  3. Ribosomes of only mitochondria and cytosol
  4. Ribosomes of only cytosol
AIPMT 2000

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