Which of the following is true about b-amylase?O It breaks the internal alpha-(1---> 6) glycosidic bonds of starchO It hydrolyzes the internal alpha-(1-->4) glycosidic bonds of amylose.O It hydrolyzes amylose sequentially from the non-reducing end of starch.O It forms alpha-(1--->4) glycosidic bonds of starch

Introduction: Amylase is an enzyme that degrades starch into sugars. It was first isolated by French…

Answered: Which of the following is true about…

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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Similar questions

Which of the following glycosidic linkages is hydrolyzed by the α-amylase? α(1,6) α(1,4) β(1,4) α(1,2)
An oligosaccharide is a repeating unit of a-D-galactopyranosyl-(a-1 >3)-allopyranoside. Each disaccharide unit is linked via B-1 --->4 glycosidic bond. The oligosaccharide has 10 monosaccharide residues. Required: Is this oligosaccharide a good substrate for glycolysis? Why or why not? Provide two reasons and discuss corn prehensively.
Which of the following reactions correspond to the decarboxylation step during ketone body formation? A. 2 acetyl-CoA → acetoacetyl-CoA B. ß-hydroxybutarate → acetoacetate C. Acetoacetate → acetone D. HMG-CoA → mevalonate
The free energy of hydrolysis of an α(1→4) glycosidic bond is −15.5 kJ ⋅mol−1, whereas that of an α(1→6) glycosidic bond is −7.1 kJ ⋅ mol−1. Use these data to explain why glycogen debranching includes three reactions [breaking and re-forming α(1→4) bonds and hydrolyzing α(1→6) bonds], whereas glycogen branching requires only two reactions [breaking α(1→4) bonds and forming α(1→6) bonds].
Which of the following reactions is reversible and irreversible? Why? a. Pyruvate + β-hydroxybutyrate → lactate + acetoacetate b. Malate + pyruvate → oxaloacetate + lactate c. Acetaldehyde + succinate → ethanol + fumarate d. Pyruvate + NADH + H+ → lactate NAD+ e. Acetoacetate + NADH + H+ → β-hydroxybutyrate + NAD+ f. Malate + NAD+ → oxaloacetate + NADH + H+
Which of the following intermediates are shared by ketone body synthesis and cholesterol biosynthesis? a) HMG-CoA b) Mevalonate c) Bothaandb d) Neitheranorb
consider the following fatty acid: ch3-ch2-ch2-ch2-ch2-ch2=ch-cooh. in terms of reducing equivalents, how much energy will it yield upon complete oxidation of co2? - 4 molecules of NADH and 4 molecules of FADH2 -4 molecules of NADH and 3 moleculs of FADH2 - 19 molecules of NADH and 8 molecules of FADH2 - 5 molecules of NADH and 8 molecules of FADH2 - 19 molecules of NADH and 9 molecules of FADH2
Which of the following answer choices correctly describes the function of amylase? Select one: a. Cleaves polysaccharides into glucose, limit dextrins, and maltose b. Cleaves each molecule of glucose into two molecules of pyruvate c. Cleaves monosaccharides into glucose, limit dextrins, and maltose d. Cleaves polysaccharides into amino acids, limit dextrins, and monosaccharides at alpha-1-6 branch points
All of the following are parts of the honeybee's processing of honey EXCEPT: producing a small amount of gluconic acid. concentrating the sugars to a supersaturated state. conversion of some glucose and fructose into sucrose. conversion of most of the fructose to the β-D-fructopyranose form.
The Glycolytic pathway describes the oxidation of glucose to pyruvate with the generation of ATP and NADH Which of the following 8 statements are correct about the process of Glycolysis? a.Dihydroxyacetone phosphate is isomerized to the aldehyde glyceraldehyde 3-phosphate b. phosphoenolpyruvate is formed from the loss of a hydrogen atom on carbon 2 and a hydroxyl group from carbon 3 c. Glucose transporters only transports phosphorylated glucose d. 2 molecules of NADH is produced from the phosphorylated oxidation of Glyceraldehyde-3-phosphate e. when phosphoenolpyruvate is converted to pyruvate, 1 molecule of ATP is produced f. Fructose-1,6.biphosphate is cleaved by aldolase to form 2 molecules of glyceraldehyde-3-phosphate g. The substrate level phosphorylation of 1,3-biphosphoglycerate yields 2 molecules of ATP h. Glyceraldehyde-3-phosphate loses a hydrogen atom on carbon 1 and gains an oxygen atom i. The ketose sugar glucose-6-phosphate is…
threose-4 phosphate (a 4 carbon aldose) is fed into glycolysis after a decarboxylation reaction that uses an NAD+ to generate a 3 carbon aldose. How many ATP and NADH are generated by breaking down this molecule to pyruvate?
What products are formed by the enzymatic hydrolysis of starch? How can you tell the enzymatic hydrolysis of starch is complete?

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