10-item Test On Energy Metabolism
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MULTIPLE CHOICETest your knowledge in carbohydrate metabolism. You have 4 minutes to complete the test.
- 1.
- A.
They combine molecules into more complex and energy-rich molecules.
- B.
They are usually coupled with anabolic pathways to which they supply energy in the form of ATP.
- C.
They involve endothermic reactions that break complex molecules into simpler ones.
- D.
They do not need enzyme catalysts.
- E.
They build up complex molecules such as proteins from amino acids.
- 2.The hydrolysis of sucrose by the enzyme sucrase results in
- A.
Bringing glucose and fructose together to form sucrose.
- B.
Utilization of water as a glycosidic linkage is formed between glucose and fructose.
- C.
Combination of glucose and fructose to form sucrase.
- D.
The addition of free water to sucrose as the linkage between glucose and fructose is formed.
- E.
Breaking the bond between glucose and fructose by breaking a water molecule and adding an H+ to one and an OH- to the other.
- 3.Which term most precisely describes the general process of combining small molecules to form large molecules ?
- A.
Exothermic reaction
- B.
Dehydration reaction.
- C.
Metabolism
- D.
Catabolism
- E.
Anabolism
- 4.After digestion, what happens when glucose is not immediately metabolized or converted to glycogen?
- A.
It is directed towards the large intestine where it is immediately excreted in the form of feces.
- B.
It is reabsorbed in the small intestine.
- C.
Hyperglycemia will develop.
- D.
Hypoglycemia will deveop.
- E.
The blood will become acidic.
- 5.Which of the following statements does not describe glycolysis?
- A.
It is an aerobic process.
- B.
It is also known as the Embden-Meyerhoff pathway.
- C.
It supplies the ATP needed for muscle contraction.
- D.
It takes place in the cytoplasm of the cell.
- E.
It breaks down a molecule of glucose to 2 molecules of pyruvate.
- 6.How many molecules of ATP are produced from the metabolism of 1 molecule of glucose?
- A.
40
- B.
36
- C.
26
- D.
12
- E.
2
- 7.
- A.
2 molecules of NADH.
- B.
2 molecules of ADP.
- C.
2 molecules of pyruvate.
- D.
2 molecules of ATP.
- 8.The following conditions / processes will remove excess glucose from the blood except
- A.
Glycogenesis.
- B.
Glycogenolysis.
- C.
Presence of insulin.
- D.
Conversion to fat.
- 9.Which of the following functions is not performed by insulin?
- A.
It promotes glucose absorption in the bloodstream.
- B.
It increases cellular uptake of glucose.
- C.
It inhibits glycogenolysis.
- D.
It promotes the oxidation of glucose in the cell.
- 10.All of the following conditions may likely happen when carbohydrate is totally removed from the diet except
- A.
The body will switch into preparing glucose from non-carbohydrate sources.
- B.
The blood may become acidic due to the formation of ketone and acids as byproducts of the metabolism of fatty acids.
- C.
The person may lose weight.
- D.
Glucose may accumulate in the bloodstream resulting to hyperglycemia.
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