Enzymes and Carbohydrate Metabolism Quiz

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Which enzymes are involved in the disintegration of proteincarbohydrate complexes?

Glycosidases and lipases

Glycosidases and sulphatases (correct)

Proteases and lipases

Proteases and sulphatases

What are the functions of mucoproteins?

Transport trace elements and possess enzymatic activity

Reduce friction and form cell surface receptors (correct)

Reduce friction, enzymatic activity, and transport trace elements

Reduce friction, form cell surface receptors, and possess enzymatic activity

Which compounds are present in dentin?

Glycoproteins and proteoglycans (correct)

Glycoproteins, proteoglycans, and albumins

Proteoglycans and albumins

Mucoproteins and glycoproteins

What is the predominant amino acid in the structure of collagen?

Glycine Signup and view all the answers

What is the non-protein group in collagen?

Oligosaccharide Signup and view all the answers

Which type of collagen is found in basal membranes?

Type IV Signup and view all the answers

Which of the following is the correct sequence of intermediates produced in lactate oxidation?

lactate → pyruvate → acetyl-CoA → CO2 Signup and view all the answers

Which of the following is the correct sequence of intermediates in gluconeogenesis starting from aspartate?

aspartate → oxaloacetate → phosphoenolpyruvate → fructose-1,6-bisphosphate Signup and view all the answers

Which of the following is the correct sequence of enzymes participating in lactate oxidation to CO2 and H2O?

lactate dehydrogenase → pyruvate dehydrogenase → isocitrate dehydrogenase Signup and view all the answers

Which of the following processes require ATP?

all of the above Signup and view all the answers

Which of the following are components of the adenylate system?

AMP, ATP, and pyrophosphate Signup and view all the answers

At what stages of the Krebs cycle do decarboxylation reactions take place?

at the conversion of citrate to isocitrate and at the conversion of α-ketoglutarate to succinyl-CoA Signup and view all the answers

According to the chemical-parasitic theory of Miller, at what pH does demineralization of tooth enamel occur?

4.5 Signup and view all the answers

Which of the following is a sucrose sorbent on teeth that can contribute to dental caries?

Dextran Signup and view all the answers

Which of the following is a key reaction in gluconeogenesis?

Fructose-1,6-bisphosphate + H2O → Fructose-6-phosphate + Pi Signup and view all the answers

Which of the following is not a substrate for gluconeogenesis?

Acetoacetyl-CoA Signup and view all the answers

Which of the following intermediate metabolites is produced during glycogen synthesis in cariogenic bacteria?

ADP-glucose Signup and view all the answers

Which of the following is not a characteristic of dental caries?

It is caused by a single microorganism Signup and view all the answers

Which of the following polysaccharides can be synthesized by cariogenic bacteria?

Dextran Signup and view all the answers

Which of the following is not a biological role of nonoxidative phase of pentose phosphate pathway?

Reduction of NAD+ Signup and view all the answers

Which of the following organs has a complete set of gluconeogenesis enzymes?

Liver Signup and view all the answers

How many moles of ATP can be synthesized in oxidation of 1 mole of acetyl-CoA to CO2 and H2O?

16 Signup and view all the answers