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Cell: The Unit of Life · Question 124

AIPMT 2001MCQEasy📈 Topic in 25% papers+4−1
1

Element necessary for the middle lamella is

  1. K
  2. Cu
  3. Ca
  4. Zn

Answer

(3) Ca

Solution

As per NCERT, the middle lamella is a layer mainly of calcium pectate which holds or glues the different neighbouring cells together.

⇒ Calcium is used in the synthesis of the middle lamella during cell division.

∴ The element necessary for the middle lamella is Ca.

Answer: (3)

AIPMT 2001

Keep practising — Cell: The Unit of Life

2

Microtubules are absent in:

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

Spindle fibres unite with which structure of chromosomes?

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

Lysosome contains:

  1. Reductive enzymes
  2. Oxidative enzymes
  3. Anabolic enzymes
  4. Hydrolytic enzymes
AIPMT 2000
5

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
6

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
7

Which cell organelle is concerned with glycosylation of protein?

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

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