TRB Preparation Zoology CARBOHYDRATE Part-6

83 . In which region fructose and galactose are converted into glucose?
          Answer : Liver  
84 . Which monosaccharide is absorbed rapidly in the small intestine?
           Answer : Galactose

85 . List out the rate of absorption of monosaccharides in the small intestine.
           Answer : Galactose is absorbed rapidly , glucose next,fructose more slowly ,then mannose and                             pentoses come last.

86 . Which one facilitates the absorption of sugars in small intestine?
          Answer : Villi

87 . What are the two processes helps in the absorption of sugars?
          Answer : Selective permeability and active transport

88 . What is glycolysis?
          Answer : The conversion of glucose or glycogen to pyruvic acid and lactic acid is known as glycolysis.

89 . What is glycogenesis?
          Answer : The synthesis of glycogen from glucose is called glycogenesis.

90 . What is glycogenolysis?
          Answer : The process of breakdown of liver glycogen to  glucose is called glycogenolysis .

91 . What is gluconeogenesis?
          Answer : The formation of glucose or glycogen from non-carbohydrate source is known as       

92 . What are the other names for glycolysis?
           Answer : Embden Meyerhof pathway or anaerobic pathway.

93 . In which region glycogenesis occurs?
         Answer : Glycogenesis mostly occurs in liver and muscle.

94. What are the principal organs responsible for gluconeogenesis?
             Answer : Liver and kidney

95 . Embden Meyerhof pathway is also called anaerobic pathway. Why?
              Answer : Because participation of oxygen is not required for this reaction.

96 . Which organ plays an important role in carbohydrate metabolism?
              Answer : Liver

97 .List out non - carbohydrate sources for gluconeogenesis.
              Answer : The glucogenic amino acids like aspartic acid, glutamic acid, alanine, certain intermediaries of carbohydrate metabolism namely lactic acid,pyruvic acid, succinic acid, fatty acid and glycerol.

98 . In which region the enzyme glucose -6 – phosphatase  is present?
              Answer : Liver
99 .What is Von Gierke’s disease?
              Answer : When there is a deficiency of glucose -6 – phosphatase enzyme in the liver, glycogenolysis  is retarded and blood glucose is reduced,whereas glycogenesis occurs in the usual manner ,resulting in an abnormal accumulation of glycogen in the liver .This is a defect in Von Gierke’s disease, a glycogen storage disease.

100. What are the other names for citric acid cycle?
             Answer : Tricarboxylic acid cycle (TCA cycle ) or Krebs cycle.


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