Quick Biochemistry - Vitamins (Section 6)

  • 1
    Which amino acid from the list is a dietary requirement for humans?
    Válasz
    (D)
    Isoleucine
  • 2
    Which food group has the greatest impact on the specific dynamic action?
    Válasz
    (C)
    proteins
  • 3
    Why are essential amino acids called 'essential'?
    Válasz
    (B)
    They need to be obtained from the diet because the human body has difficulty building their carbon chains.
  • 4
    What is a positive effect of dietary fiber?
    Válasz
    (D)
    All of these
  • 5
    What is a likely consequence of an inability to process sucrose?
    Válasz
    (C)
    Diarrhoea
  • 6
    Which sugar is associated with potential intolerance?
    Válasz
    (B)
    Lactose
  • 7
    Which nutrient is found in low quantities in milk?
    Válasz
    (C)
    Iron
  • 8
    Which macronutrient is present in small amounts in eggs?
    Válasz
    (C)
    Carbohydrates
  • 9
    Which condition is associated with an increased BMR (Basal Metabolic Rate)?
    Válasz
    (A)
    Hyper thyroidism
  • 10
    Which amino acid is abundant in soyabean proteins?
    Válasz
    (B)
    Alanine
  • 11
    Which amino acid is least abundant in corn and gliadin?
    Válasz
    (D)
    Aspartic acid
  • 12
    What condition results from a lack of thiamine in the diet?
    Válasz
    (D)
    Beriberi
  • 13
    Retinol and retinol-binding protein (RBP) associate with which protein?
    Válasz
    (B)
    Prealbumin
  • 14
    Which deficiency leads to megaloblastic anemia?
    Válasz
    (A)
    Folic acid
  • 15
    Which vitamin functions as an antioxidant?
    Válasz
    (C)
    Vitamin E
  • 16
    What is the chemical structure of calcitriol?
    Válasz
    (D)
    1,25-diOH cholecalciferol
  • 17
    Where does the 1-hydroxylation of 25-OH vitamin D₃ occur?
    Válasz
    (B)
    Kidneys
  • 18
    In which organ does 25-hydroxylation of vitamin D₃ take place?
    Válasz
    (A)
    Liver
  • 19
    What stimulates the hydroxylation of 25-hydroxy cholecalciferol?
    Válasz
    (B)
    Parathyroid hormone
  • 20
    What substance in raw egg white interferes with nutrient absorption?
    Válasz
    (B)
    Avidin
  • 21
    Which of the following substances contains cyanide?
    Válasz
    (A)
    Vitamin B₁₂
  • 22
    Which vitamin can humans create internally?
    Válasz
    (D)
    Niacin
  • 23
    What light-sensitive substance is found in the retina?
    Válasz
    (A)
    Rhodopsin
  • 24
    Which vitamin helps prevent xerophthalmia?
    Válasz
    (D)
    Vitamin A
  • 25
    Which of these is not a typical sign of Addison's disease?
    Válasz
    (C)
    Hypokalemia
  • 26
    Gammaxane interferes with the function of which substance?
    Válasz
    (D)
    Inositol
  • 27
    A lack of pyridoxin can cause seizures because it's needed to produce which substance?
    Válasz
    (A)
    GABA
  • 28
    Sulfa drugs block the use of which nutrient?
    Válasz
    (C)
    Folic acid
  • 29
    Which unusual metabolite might cause the nervous system problems in pernicious anemia?
    Válasz
    (A)
    Taurine
  • 30
    Which vitamin is abundant in green, leafy vegetables?
    Válasz
    (D)
    Both (B) and (C)
  • 31
    What vitamin deficiency can potentially result from using isonicotinic acid hydrazide in tuberculosis treatment?
    Válasz
    (D)
    Inositol
  • 32
    Which molecule is biotin essential for the reaction of CO₂ with?
    Válasz
    (B)
    Acetyl CoA
  • 33
    What type of anemia is often associated with a lack of folate?
    Válasz
    (A)
    Megaloblastic anemia
  • 34
    A lack of iron can cause what kind of anemia?
    Válasz
    (D)
    Hypochromic microcytic anemia
  • 35
    Which vitamin's coenzymes are corrinoid coenzymes?
    Válasz
    (A)
    Vitamin B12
  • 36
    What type of protein initially binds to Vitamin B₁₂?
    Válasz
    (B)
    R-Proteins
  • 37
    What is the extrinsic factor of castle?
    Válasz
    (B)
    Glycoprotein
  • 38
    What is the intrinsic factor of castle?
    Válasz
    (A)
    Vitamin B12
  • 39
    What is the meaning of 'pernicious'?
    Válasz
    (B)
    Dangerous
  • 40
    Which molecule is required for the reduction of D-ribonucleotides to D-deoxyribonucleotides in prokaryotes?
    Válasz
    (B)
    Thioredoxin
  • 41
    Which of the following is another name for Biotin?
    Válasz
    (A)
    Factor that prevents harm from egg whites
  • 42
    What is the primary cause of angular stomatosis?
    Válasz
    (B)
    Lack of Vitamin C
  • 43
    What is a key role of Vitamin K, specifically in relation to enzymes?
    Válasz
    (A)
    It's a cofactor in the production of y carboxyglutamate
  • 44
    What substance, when given, will increase prothrombin time?
    Válasz
    (A)
    Vitamin K
  • 45
    Which vitamin functions as an antioxidant?
    Válasz
    (B)
    Vitamin D
  • 46
    Which vitamin is easily degraded by light?
    Válasz
    (C)
    Niacin
  • 47
    Which of the following deficiencies is linked to episodes of convulsions?
    Válasz
    (B)
    Folic acid
  • 48
    Which vitamin is associated with the development of metastatic classification when consumed in excess?
    Válasz
    (A)
    A
  • 49
    What substance is an anti-vitamin that opposes the action of para-aminobenzoic acid?
    Válasz
    (C)
    Sulphonamides
  • 50
    Which of the following is reported as a consequence of multiple pantothenic acid deficiencies in humans?
    Válasz
    (C)
    Cataract