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MCQs

Total Questions : 159 | Page 8 of 16 pages
Question 71. Which of the following functional groups would make a carbon-based compound the least polar?
  1.    Phosphate
  2.    Methyl
  3.    Carboxyl
  4.    Amino
 Discuss Question
Answer: Option B. -> Methyl
Answer: (b).Methyl
Question 72. Any system that is not at equilibrium
  1.    is thermodynamically unstable, although it may be kinetically stable
  2.    is kinetically unstable, although it may be thermodynamically stable
  3.    is rushing toward equilibrium at a very rapid rate
  4.    requires an enzyme to reach equilibrium
 Discuss Question
Answer: Option A. -> is thermodynamically unstable, although it may be kinetically stable
Answer: (a).is thermodynamically unstable, although it may be kinetically stable
Question 73. The element neon (Ne) has eight electrons in its outermost electron shell. How many covalent bonds will Ne readily form?
  1.    None
  2.    One
  3.    Two
  4.    Four
 Discuss Question
Answer: Option A. -> None
Answer: (a).None
Question 74. The cellular organelle associated with photosynthesis is the
  1.    golgi complex
  2.    mitochondrion
  3.    lysosome
  4.    chloroplast
 Discuss Question
Answer: Option D. -> chloroplast
Answer: (d).chloroplast
Question 75. What is the source of free energy (ΔG) for moving protons out of mitochondria against their concentration and electrical gradients?
  1.    Glycolysis
  2.    Creatine phosphate
  3.    The redox reactions of electron transport
  4.    ATP
 Discuss Question
Answer: Option C. -> The redox reactions of electron transport
Answer: (c).The redox reactions of electron transport
Question 76. Which molecule serves as a carrier of fatty acids in mitochondria?
  1.    Acetyl-CoA
  2.    Carnitine
  3.    Dolichol
  4.    Malonyl-CoA
 Discuss Question
Answer: Option B. -> Carnitine
Answer: (b).Carnitine
Question 77. If the ester bonds of a triacylglycerol molecule's are broken then the kind of molecule, which would be soluble in water, is
  1.    fatty acid
  2.    steroid
  3.    glycogen
  4.    glycerol
 Discuss Question
Answer: Option D. -> glycerol
Answer: (d).glycerol
Question 78. Cellular organelles are embedded in the
  1.    endoplasmic reticulum
  2.    cristae
  3.    cytosol
  4.    microtubules
 Discuss Question
Answer: Option C. -> cytosol
Answer: (c).cytosol
Question 79. Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential?
  1.    Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
  2.    The rules governing oxidation and reduction apply only in vitro, and not in vivo
  3.    Electrons always go from reductants with high redox potentials to oxidants with low redox potentials
  4.    None of the above
 Discuss Question
Answer: Option A. -> Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
Answer: (a).Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
Question 80. Tonoplast is a membrane around
  1.    cytoplasm
  2.    vacuole
  3.    nucleus
  4.    mitochondria
 Discuss Question
Answer: Option B. -> vacuole
Answer: (b).vacuole

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