BMSC230 Midterm Exam with Complete Solutions

BMSC230 Midterm Exam with Complete Solutions

How do we determine a low energy compound? What are some examples of both high and
low? Correct Ans-Low energy compounds (glucose, glycerol-3) are below -25 ΔG°' and high
energy compounds are above (1,3 BPG, PEP, Creatine phosphate)




Electron transfer equation Correct Ans-ΔGo' = -nF(Eo'net)

n= # of electrons

F= Faraday's #

Eo'net= Net reduction potential




What enzymes convert lactose, sucrose and maltose to glucose? Correct Ans--Lactase
(Beta-galactosidase)

-Sucrase (invertase)

-Maltase




Where would you find GLUT2 and GLUT4? What do they do? Correct Ans-GLUT2 is in the
liver and pancreas and the play a role inthe regulation of insulin

GLUT 4 is in the muscle and increases with endurance training




First reaction of the glycolysis pathway Correct Ans-Glucose + ATP

Hexokinase (enzyme)

Glucose-6-phosphate + ADP + H

, BMSC230 Midterm Exam with Complete Solutions

Second Reaction in glycolysis Correct Ans-G6P

Phosphoglucose isomerase

Fructose-6-phosphate




Third reaction of the glycolysis pathway Correct Ans-Fructose-6-Phosphate +ATP

Phosphofructokinase (enzyme)

Frucotse-1,6-bisphosphate + ADP + H

IRREVERSIBLE

ends the first half of glycolysis (energy requiring)




Fourth reaction in glycolysis Correct Ans-Fructose-1,6-bisphosphate

Aldolase (enzyme)

DHAP and GAP

Begins the second half of glycolysis




Fifth reaction in glycolysis Correct Ans-GAP (glyceraldehyde-3-phosphate) +NAD + Pi

GAP dehydrogenase

1,3-BPG + NADH + H

FIRST REACTION TO PRODUCE ENERGY IN THE FORM OF NADH