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BIOLOGY MCQs

Total Questions : 2561 | Page 53 of 257 pages
Question 521. Which one among the following cell organelles is semi-permeable ?
  1.    Cell membrane
  2.    Plasma membrane
  3.    Cell wall
  4.    Nucleus
 Discuss Question
Answer: Option D. -> Nucleus
Question 522. Any foreign object that gains entry into the cell is immediately engulfed by the ________ and is completely broken into simple digestible pieces.
  1.    R.B.Cs
  2.    Platelets
  3.    Haemoglobin
  4.    Lysosomes
 Discuss Question
Answer: Option D. -> Lysosomes
Question 523. The function of nucleolus is the synthesis of
  1.    DNA
  2.    M-RNA
  3.    R-RNA
  4.    T-RNA
 Discuss Question
Answer: Option C. -> R-RNA
Question 524. Biological membranes are composed of
  1.    Phospholipids
  2.    Proteins
  3.    Carbohydrate groups
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 525. Biological membranes are composed of
  1.    40% proteins and 60% lipids
  2.    50% proteins and 50% lipids
  3.    70% proteins and 30% lipids
  4.    60% proteins and 40% lipids
 Discuss Question
Answer: Option D. -> 60% proteins and 40% lipids
Question 526. They are double membrane structures that are commonly oval or disc shaped.
  1.    Ribosomes
  2.    Lysosomes
  3.    Nucleus
  4.    Golgi bodies
 Discuss Question
Answer: Option A. -> Ribosomes
Question 527. The cell wall of plants is generally made up of cellulose and is differently structured than that of a
  1.    Moss
  2.    Bacterium
  3.    Fern
  4.    Algae
 Discuss Question
Answer: Option B. -> Bacterium
Question 528. Which cell feature is responsible for making proteins?
  1.    Chromosomes
  2.    Nucleus
  3.    Ribosomes
  4.    Cytoplasm
 Discuss Question
Answer: Option C. -> Ribosomes
Question 529. In a cell process of respiration takes place in
  1.    Mitochondria
  2.    Plastids
  3.    Ribosomes
  4.    Lysosomes
 Discuss Question
Answer: Option A. -> Mitochondria
Question 530. It is the basic structure found in all membranes such as those of mitochondria and chloroplasts.
  1.    Nuclear membrane
  2.    Unit membrane
  3.    Plasma membrane
  4.    Cell wall
 Discuss Question
Answer: Option B. -> Unit membrane

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