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MCQs

Total Questions : 169 | Page 14 of 17 pages
Question 131. Fruits and leaves have a natural protective coatings of fatty acids known as
  1.    waxes
  2.    oil
  3.    cutin
  4.    cell wall
 Discuss Question
Answer: Option A. -> waxes
Answer: (a).waxes
Question 132. There are two types of a starch which are amylose and
  1.    pectin
  2.    amylopectin
  3.    agar
  4.    dextrin
 Discuss Question
Answer: Option B. -> amylopectin
Answer: (b).amylopectin
Question 133. Two molecules which belong to different categories combine together to form
  1.    a complex molecule
  2.    conjugated molecule
  3.    compound molecule
  4.    double molecule
 Discuss Question
Answer: Option B. -> conjugated molecule
Answer: (b).conjugated molecule
Question 134. A scientist who first determined sequence of amino acids in a protein molecule was
  1.    F.Sanger
  2.    Edward Jenner
  3.    Erwin Chargaff
  4.    F. Miescher
 Discuss Question
Answer: Option A. -> F.Sanger
Answer: (a).F.Sanger
Question 135. Breaking down of large molecules like proteins, starch and fats is known as
  1.    mechanical digestion
  2.    chemical digestion
  3.    physical digestion
  4.    none of others
 Discuss Question
Answer: Option B. -> chemical digestion
Answer: (b).chemical digestion
Question 136. Number of glucose (C₆H₁₂O₆) units in a starch (C₆H₁₀O₅)n molecule may be up to
  1.    100
  2.    200
  3.    220
  4.    300
 Discuss Question
Answer: Option B. -> 200
Answer: (b).200
Question 137. Most complicated food molecules are
  1.    proteins
  2.    fats
  3.    carbohydrates
  4.    glucose
 Discuss Question
Answer: Option A. -> proteins
Answer: (a).proteins
Question 138. Seldom fatal disease is known as
  1.    malignant
  2.    benign
  3.    tertian malaria
  4.    anemia
 Discuss Question
Answer: Option B. -> benign
Answer: (b).benign
Question 139. In hydrolysis, the larger molecules are broken down into smaller molecules by the addition of
  1.    amino acids
  2.    water
  3.    grape sugar
  4.    sucrose
 Discuss Question
Answer: Option B. -> water
Answer: (b).water
Question 140. Hair cover is no longer an efficient insulator in
  1.    strong winds
  2.    water
  3.    arctic pole
  4.    Alaska
 Discuss Question
Answer: Option B. -> water
Answer: (b).water

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