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Cell - the unit of life MCQ Question with Answer

Cell - the unit of life MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 50
Choose the wrong statements regarding bacterial cell

  1. Glycocalyx is the outermost envelope in bacteria.
  2. The glycocalyx could be a loose sheath called capsule.
  3. The glycocalyx may be thick and tough called slime layer.
  4. A special structure formed by the plasma membrane is called mesosome.
  5. Small bristle like fibres sprouting out of the cell are called fimbriae.

(i) and (iii)
(i) and (ii)
(ii) and (iii)
(i) and (iv)
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Question No : 51
Which of the following statements are correct ?

  1. In prokaryotic cells, a special membranous structure formed by the extension of the plasma membrane into the cell is known as polysome.
  2. The smooth endoplasmic reticulum is the major site for synthesis of glycoproteins.
  3. RuBisCO is the most abundant protein in the whole biosphere.
  4. Mitochondria, chloroplasts and peroxisomes are not considered as part of endomembrane system. Of the above statements

(iii) and (iv)
(i) and (ii)
(ii) and (iii)
(i) and (iv)
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Question No : 52
Consider the following statements and choose the correct statement.

  1. The endomembrane system includes mitochondria, chloroplast and peroxisomes.
  2. Smooth endoplasmic reticulum is the major site for synthesis of lipid.
  3. Rough endoplasmic reticulum is actively involved in protein synthesis.
  4. Mitochondrial matrix possesses single circular DNA, a few RNA and 80S ribosomes. Of the above statements.

(i) and (iii)
(ii) and (iv)
(iii) and (iv)
(ii) and (iii)
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Question No : 53
Given below are some characters of a cell organelle identify the correct organelle which shows all the characters described above.

  1. It is a membrane bound space found in the cytoplasm.
  2. It is bound by a single membrane called tonoplast.
  3. It contains water, sap, excretory products and other materials not useful to the cell.
  4. It has higher concentration of sap than the cytoplasm.

Golgi apparatus
Lysosomes
Endoplasmic reticulum
Vacuoles
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Question No : 54
Read the statements given below with regard to the functions performed by Golgi apparatus ?

  1. Transport and chemically modify the materials contained within it.
  2. Performs the function of packaging materials.
  3. Important site of formation of glycoproteins and glycolipids.

Which of the following is the correct answer ?

(i) is wrong but (ii) and (iii) are correct
(ii) is wrong but (i) and (iii) are correct
(ii) and (iii) are wrong but (i) is correct
All are correct.
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Question No : 55
Which of the following statements are correct?

Na+/K+ pump is an example of active transport.
In plant cells lipid like steroidal hormones are synthesized in SER.
In plant cells, the vacuoles can occupy up to 10% of the volume of the cell.
Chlorophyll and leucoplast are responsible for trapping light energy essential for photosynthesis.
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Question No : 56
Statement 1: Centrosomes and centrioles are related to each other.
Statement 2: Centrosome usually contains two cylindrical structures called centrioles.

Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.
Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.
Statement -1 is true and statement - 2 is false.
Statement -1 is false and statement - 2 is true.
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