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Cell: The Unit of Life · Question 125

AIPMT 2001MCQEasy📈 Topic in 12% papers+4−1
1

Microtubules are absent in:

  1. Spindle fibres
  2. Mitochondria
  3. Centriole
  4. Flagella

Answer

(2) Mitochondria

Solution

As per NCERT, the axoneme of cilia and flagella has nine pairs of peripheral and two central microtubules (9 + 2 array).

∵ Each centriole has nine evenly spaced peripheral fibrils of tubulin triplets, and centrioles form the basal bodies and the spindle fibres (made of microtubules) of the spindle apparatus.

⇒ Mitochondria are double-membrane-bound organelles with matrix and cristae; they have no microtubules.

Answer: (2)

AIPMT 2001

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2

Spindle fibres unite with which structure of chromosomes?

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

Lysosome contains:

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

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
5

Function of telomeres in nucleus is

  1. To seal the ends of chromosome
  2. Poleward movement
  3. To recognize the homologous chromosome
  4. To initiate the RNA synthesis
AIPMT 2000
6

Which cell organelle is concerned with glycosylation of protein?

  1. Endoplasmic reticulum
  2. Ribosome
  3. Mitochondria
  4. Peroxisome
AIPMT 2000

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