Which of the following enzyme(s) is/are present in liver cells?() Glycogen phosphorylase(i) Glucose 6-phosphatase(iii) Fatty acid synthaseO A. (i) onlyO B. (ii) onlyO C. () and (ii) onlyO D. (ii) and (iii) onlyO E. (), (ii) and (ii)

Enzymes are highly specialized proteins that have extraordinary catalytic power, greater than that…

Answered: Which of the following enzyme(s) is/are…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Glucose binds to glycogen phosphorylase and competitively inhibits the enzyme. What is the physiological advantage of this?
If your liver cells contained a mutation in ACC2 that rendered it constitutively inactive, what two downstream effects might you see as a result? Choose the TWO correct answers. (A) overproduction of malonyl CoA in the mitochondria (B) increase in ketone body synthesis(C) decreased rates of fatty acid oxidation(D) fewer VLDL particles produced by the liver (E) accumulation of fatty acyl-CoA in the cytoplasm
What impact would an increase in intramitochondrial oxaloacetate have on fatty acid synthesis? Justify your response succinctly.
How many ATP will be broken down in the complete β-oxidation of this fatty acid?
If glucagon binds to the liver cell, what is the expected regulation of the bifunctional enzyme phosphofructokinase-2/fructose-2,6-bisphosphatase and how would the levels of fructose-2,6-bisphosphate be impacted?
Fatty acids are stored in adipose tissue, as triacylglycerol (TAG) forms. TAGs are degraded as glycerol and fatty acids where energy is required. Based on that knowledge explain: a) How these products are used in the adipose, liver, and other tissue? b)Why glycerol can not be metabolized in adipose tissue?
In fatty acid biosynthesis explain the following two parts -(a) What effect will an increase in oxaloacetate in mitochondria have on fatty acid biosynthesis?(b) How insulin and glucagon affect fatty acid oxidation and biosynthesis reactions/pathways, name them.
The following link carbohydrate metabolism with lipid biosynthesis: (a) How many molecules of glucose are required to provide the carbon for synthesis of one molecule of palmitate? (b) How many molecules of glucose are required if all of the glucose first proceeds through the pentose phosphate pathway before proceeding through the rest of glycolysis on its way to pyruvate?
Consider the docosanoic acid, C21H43CO2H a. Label the a and B carbons b. Draw the acyl CoA derived from this fatty acid c. How many acetyl CoA molecules are formed by complete B-oxidation? d. How many cycles of B-oxidation are needed for complete oxidation? e. How many molecules of ATP are formed from the complete catabolism of this fatty acid?
Adults who participate in vigourous physical exercise need around 160 g of carbohydrate per day but just approximately 20 mg of niacin for good nutrition. How do you interpret the finding in light of niacin's involvement in glycolysis?
Lipases break down triacylglycerols by catalyzing hydrolysis. What are the products of this hydrolysis?
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Which of the following enzyme(s) is/are present in liver cells? () Glycogen phosphorylase (ii) Glucose 6-phosphatase (iii) Fatty acid synthase O A. () only O B. (i) only O. () and (ii) only O D. (ii) and (iii) only O E. (), (i) and (iii)