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MCQs

Total Questions : 154 | Page 15 of 16 pages
Question 141. The precursor of eicosanoids in human is
  1.    Ceramide
  2.    Arachidonic acid
  3.    Cholesterol
  4.    Squaline
 Discuss Question
Answer: Option B. -> Arachidonic acid
Answer: (b).Arachidonic acid
Question 142. Which of the following is the simplest hydrophilic moiety present in membrane lipids?
  1.    Glucose
  2.    Amino group
  3.    Hydroxyl group
  4.    Phosphate group
 Discuss Question
Answer: Option C. -> Hydroxyl group
Answer: (c).Hydroxyl group
Question 143. The most complex sphingolipid is
  1.    Cerebroside
  2.    Gangleoside
  3.    Globoside
  4.    Ceramide
 Discuss Question
Answer: Option B. -> Gangleoside
Answer: (b).Gangleoside
Question 144. Which of the following is considered as the structural parent of all sphingolipids?
  1.    Sphingosine
  2.    Ceramide
  3.    Lecithin
  4.    Sphyngomylein
 Discuss Question
Answer: Option B. -> Ceramide
Answer: (b).Ceramide
Question 145. Which of the following is correct?
  1.    Peroxisomes have a single boundary membrane
  2.    Peroxisomes contain enzymes that degrade fatty acids and amino acids
  3.    The byproduct of given reactions in (b) is toxic to cells
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Answer: (d).All of the above
Question 146. The smooth endoplasmic reticulum (SER) is the site of
  1.    phospholipid synthesis
  2.    amino acid synthesis
  3.    carbohydrate synthesis
  4.    protein synthesis
 Discuss Question
Answer: Option A. -> phospholipid synthesis
Answer: (a).phospholipid synthesis
Question 147. Bacteriorhodopsin
  1.    absorbs light and pumps protons
  2.    is an integral membrane protein
  3.    contains primarily alpha-helical residues
  4.    all of the above
 Discuss Question
Answer: Option D. -> all of the above
Answer: (d).all of the above
Question 148. Cholesterol is somewhat amphipathic due to
  1.    the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
  2.    the long branched hydrocarbon along with the four hydrocarbon rings
  3.    the five-methyl groups along with the hydrocarbon chain
  4.    the three six-membered rings along with the single five-membered ring
 Discuss Question
Answer: Option A. -> the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
Answer: (a).the single hydroxyl along with the hydrocarbon nature of the remainder of the molecule
Question 149. In active transport, the membrane structure that functions is
  1.    cholesterol
  2.    integral proteins
  3.    carbohydrates
  4.    hydrophobic molecules
 Discuss Question
Answer: Option B. -> integral proteins
Answer: (b).integral proteins
Question 150. Palmitate has 16 carbon atoms with
  1.    2 double bonds
  2.    3 double bonds
  3.    One double bond
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Answer: (d).None of these

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