
Concept explainers
(a)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Glycogen phosphorylase is one of the phosphorylase enzymes.
(b)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Phosphorolysis is analogous to hydrolysis.
(c)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Transferases are enzymes that catalyzes the transfer of certain
(d)
Interpretation:
Each item should be matched with its description.
Concept introduction:
a-1,6-glucosidase is a glycogen debranching enzyme which involves in glycogen catabolism.
(e)
Interpretation:
Each item should be matched with its description.
Concept introduction:
The free glucose molecule released from the cleavage of glucosyl residue from glycogen after glycogen phosphorylase activity, has a phosphate group on C-1. This glucose-1-phosphate is not a useful metabolite. So it should be converted to glucose-6-phosphate.
(f)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Phosphorylase kinase is a serine/threonine specific protein kinase.
(g)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Protein kinase A perform several functions like regulation of glycogen, sugar and lipid
(h)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Calmodulin is a calcium binding protein which is found in all eukaryotic cells. Ca2+ is required for the activation of calmodulin.
(i)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Epinephrine is a hormone and also known as adrenaline. It is secreted by adrenal glands and used as a medication for various illnesses.
(j)
Interpretation:
Each item should be matched with its description.
Concept introduction:
Glucagon is secreted in alpha cells in pancreas. It is a peptide hormone. It is considered as the major catabolic hormone in human body.

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Chapter 21 Solutions
Biochemistry
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- 6. What is the IUPAC name of the following compound? A) (Z)-3,5,6-trimethyl-3,5-heptadiene B) (E)-2,3,5-trimethyl-1,4-heptadiene C) (E)-5-ethyl-2,3-dimethyl-1,5-hexadiene D) (Z)-5-ethyl-2,3-dimethyl-1,5-hexadiene E) (Z)-2,3,5-trimethyl-1,4-heptadienearrow_forwardConsider the reaction shown. CH2OH Ex. CH2 -OH CH2- Dihydroxyacetone phosphate glyceraldehyde 3-phosphate The standard free-energy change (AG) for this reaction is 7.53 kJ mol-¹. Calculate the free-energy change (AG) for this reaction at 298 K when [dihydroxyacetone phosphate] = 0.100 M and [glyceraldehyde 3-phosphate] = 0.00300 M. AG= kJ mol-1arrow_forwardIf the pH of gastric juice is 1.6, what is the amount of energy (AG) required for the transport of hydrogen ions from a cell (internal pH of 7.4) into the stomach lumen? Assume that the membrane potential across this membrane is -70.0 mV and the temperature is 37 °C. AG= kJ mol-1arrow_forward
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