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Questions and Answers
What is the result of the cross-linking of lens proteins by S-S- bond formation?
What is the result of the cross-linking of lens proteins by S-S- bond formation?
- Blindness
- NADPH depletion
- Glaucoma
- Cataracts (correct)
What is the result of the accumulation of galactose and galactitol in the eye?
What is the result of the accumulation of galactose and galactitol in the eye?
- NADPH depletion
- Liver damage
- Raised intra-ocular pressure (correct)
- Cataracts
What is the effect of galactose 1-phosphate accumulation in tissues?
What is the effect of galactose 1-phosphate accumulation in tissues?
- Damage to the liver, kidney, and brain (correct)
- ATP synthesis
- Cataract formation
- NADPH depletion
What is the intermediate of glycolysis that fructose is converted to?
What is the intermediate of glycolysis that fructose is converted to?
What is the enzyme that hydrolyses dietary sucrose?
What is the enzyme that hydrolyses dietary sucrose?
What is the primary physiological response that triggers gluconeogenesis?
What is the primary physiological response that triggers gluconeogenesis?
Which enzymes are the major control sites for gluconeogenesis?
Which enzymes are the major control sites for gluconeogenesis?
Which hormone decreases the activity of PEPCK?
Which hormone decreases the activity of PEPCK?
What is the result of increased rates of gluconeogenesis in the absence of adequate insulin?
What is the result of increased rates of gluconeogenesis in the absence of adequate insulin?
Which mechanism does glucagon use to stimulate gluconeogenesis?
Which mechanism does glucagon use to stimulate gluconeogenesis?
What plays a major role in determining the rate of gluconeogenesis?
What plays a major role in determining the rate of gluconeogenesis?
Where does the Citric acid cycle occur?
Where does the Citric acid cycle occur?
What is the end product of the complete oxidation of glucose derivatives?
What is the end product of the complete oxidation of glucose derivatives?
What is the molecule that most fuel molecules enter the Citric acid cycle as?
What is the molecule that most fuel molecules enter the Citric acid cycle as?
How many ATPs are produced during one complete turn of the Citric acid cycle?
How many ATPs are produced during one complete turn of the Citric acid cycle?
What is one of the byproducts of the Citric acid cycle?
What is one of the byproducts of the Citric acid cycle?
What happens to one of the three carbons that enter the mitochondria as pyruvate?
What happens to one of the three carbons that enter the mitochondria as pyruvate?
What is the primary source of glucose for the central nervous system and other glucose-dependent tissues during fasting and starvation?
What is the primary source of glucose for the central nervous system and other glucose-dependent tissues during fasting and starvation?
How long does the glucose stored as liver glycogen last during fasting?
How long does the glucose stored as liver glycogen last during fasting?
What is the process by which the body produces glucose from non-carbohydrate precursors during fasting and starvation?
What is the process by which the body produces glucose from non-carbohydrate precursors during fasting and starvation?
What is the major site of gluconeogenesis?
What is the major site of gluconeogenesis?
In which organ is galactose primarily metabolized?
In which organ is galactose primarily metabolized?
What is the purpose of the epimerase reaction during lactation?
What is the purpose of the epimerase reaction during lactation?
What is one of the main substrates of gluconeogenesis?
What is one of the main substrates of gluconeogenesis?
What is formed from the breakdown of proteins in the skeletal muscles during starvation?
What is formed from the breakdown of proteins in the skeletal muscles during starvation?
What is the result of the reduction of galactose by aldose reductase?
What is the result of the reduction of galactose by aldose reductase?
What is the consequence of a lack of galactokinase enzyme?
What is the consequence of a lack of galactokinase enzyme?
What is the name of the more severe type of galactosaemia?
What is the name of the more severe type of galactosaemia?
What is the source of galactose in the diet?
What is the source of galactose in the diet?
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