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MCQs

Total Questions : 310 | Page 23 of 31 pages
Question 221. Incorporation of atmospheric N2to NH4+ occurs via the process of
  1.    deamination
  2.    nitrogen fixation
  3.    transamination
  4.    assimilatory nitrate reduction
 Discuss Question
Answer: Option B. -> nitrogen fixation
Question 222. The role of bacteriophyll in an oxygenic photosynthesis is to
  1.    reduce NADP directly
  2.    use light energy to energize an electron
  3.    transfer electrons to an intermediate in the sulfide oxidation pathway
  4.    reduce ferridoxin directly
 Discuss Question
Answer: Option B. -> use light energy to energize an electron
Question 223. For each glucose molecule broken down, there are______________number of reduced coenzymes to be oxidized.
  1.    8
  2.    12
  3.    6
  4.    4
 Discuss Question
Answer: Option B. -> 12
Question 224. Which of the following(s) is/are the products of the light reactions of photosynthesis?
  1.    ATP and O2 only
  2.    ATP only
  3.    ATP, NADPH, and O2
  4.    NADPH only
 Discuss Question
Answer: Option C. -> ATP, NADPH, and O2
Question 225. Digestive reactions where large molecules are broken down into smaller ones are referred as
  1.    biosynthesis
  2.    catabolism
  3.    metabolism
  4.    anabolism
 Discuss Question
Answer: Option B. -> catabolism
Question 226. As the electron flow through the chains, much of their free energy is conserved in the form of ATP. This process is called
  1.    dehydrogenations
  2.    oxidative phosphorylation
  3.    electromotive potential
  4.    none of these
 Discuss Question
Answer: Option B. -> oxidative phosphorylation
Question 227. Which of the following catalyze liberation of orthophosphate from organic P compounds and inorganic pyrophosphate ?
  1.    Alkaline phosphates
  2.    Hydrogenase
  3.    Oxidoreductase
  4.    Protease
 Discuss Question
Answer: Option A. -> Alkaline phosphates
Question 228. Phosphate regulation has been observed in the production of
  1.    all of these
  2.    antibiotics
  3.    gibberelins
  4.    alkaloids
 Discuss Question
Answer: Option A. -> all of these
Question 229. The phosphate inhibition in the clavine formation with Claviceps SD58, can be counteracted by the addition of
  1.    tryptophan
  2.    alanine
  3.    lysine
  4.    methionine
 Discuss Question
Answer: Option A. -> tryptophan
Question 230. Most of the energy in aerobic respiration of glucose is captured by
  1.    electron transport of electrons from NADH
  2.    substrate-level phosphorylation
  3.    long-chain fatty acid oxidation
  4.    the enzyme formic-hydrogen lyase
 Discuss Question
Answer: Option A. -> electron transport of electrons from NADH

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