Gastrointestinal System
Consider a laboratory experiment that investigates the ability of an enzyme to hydrolyse protein at different pH levels. The solutions in the different test tubes are all at 37 °C and may contain distilled water, protein and enzyme and be at different pH. Which test tubes are likely to be the controls?
The ones containing distilled water
The test tubes with pepsin added
The test tube with a pH of 7.0
The ones without any added enzyme
The ones without any added enzyme
Such an investigation should have one tube that contains the enzyme (e.g. pepsin) and another lacking the enzyme, with the tubes being identical in all other respects (i.e. both containing protein dissolved in distilled water at the same pH). In this case the one(s) without the enzyme is the control.
The ones without any added enzyme Such an investigation should have one tube that contains the enzyme (e.g. pepsin) and another lacking the enzyme, with the tubes being identical in all other respects (i.e. both containing protein dissolved in distilled water at the same pH). In this case the one(s) without the enzyme is the control.
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Which statement best describes the process of glycogenesis?A. The digestion of glycogen in the diet
B. The conversion of fat into glycogen in muscle tissue
C. The conversion of glucose into glycogen in the liver
D. The conversion of glycogen into glucose in muscle tissue
What is the process in the digestion of food molecules that produces their monomers called?
A. Polymerisation
B. Hydrolysis
C. Isomerisation
D. Deamination
What are the end-products of carbohydrate digestion?
A. Monosaccharides
B. Disaccharides
C. Glucose
D. Risaccharides
What the products of hydrolysis of lipids?
A. Monosaccharides
B. Chylomicrons
C. Amino acids and small peptides
D. Free fatty acids and monoglycerols
What is a function of the SMALL intestine? To:
A. Temporarily store ingested food
B. Absorb the products of digestion
C. Participate in mechanical digestion
D. Secrete hydrochloric acid
Which enzyme below digests proteins?
A. Nuclease
B. Maltase
C. Carboxypeptidase
D. Transaminase
Which layer of the alimentary canal is responsible for absorbing the products of digestion?
A. Muscularis interna
B. Mucosa
C. Serosa
D. Submucosa
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