BIOC 385 Exam 2 Question Set || A Verified A+ Pass.
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Course
BIOC 385
Institution
BIOC 385
Glycogen correct answers Which glucose homopolymer would be used if a person had to sprint quickly?
Glycogen synthesis correct answers Gluconeogenesis would most likely be allosterically activated simultaneously along with which other metabolic process?
Glucagon correct answers Which hormone ...
BIOC 385 Exam 2 Question Set || A Verified A+ Pass.
Glycogen correct answers Which glucose homopolymer would be used if a person had to sprint
quickly?
Glycogen synthesis correct answers Gluconeogenesis would most likely be allosterically
activated simultaneously along with which other metabolic process?
Glucagon correct answers Which hormone slows down glycolysis while stimulating
gluconeogenesis through the phosphorylation of phosphofructokinase 2 (PFK2) and fructose-2,6-
bisphosphatase?
NADP+ correct answers What molecule activates the pentose phosphate pathway?
activated by ATP energy correct answers In the reaction catalyzed by pyruvate carboxylase (the
first reaction in gluconeogenesis), CO2 is
0; 2 correct answers Starting from the oxidative phase of the pentose phosphate pathway, how
many ATP and high-energy reduced molecules, respectively, are made in going from one
glucose molecule to glyceraldehyde-3-phosphate and fructose-6-phosphate?
glycerol correct answers Which of the following metabolites has carbon atoms that can end up in
glucose via the gluconeogenesis pathway in humans?
increase; glycolysis correct answers The hormone insulin activates phosphofructokinase 2
(2PFK2). This leads to a(n) __________ in concentration of fructose 2,6 bisphosphate, which
favors the __________ pathway.
It provides a source of NADH for gluconeogenesis via malate transport. correct answers Which
correctly describes the role of the transport system shown below?
Glucose is not exported from muscle cells because muscle cells lack glucose-6-phosphatase.
correct answers How does glycogen metabolism regulation differ between liver cells and muscle
cells?
Muscle cells store glycogen for its own energy needs and not the needs of other tissues. correct
answers Why is it important that muscle cells are unresponsive to glucagon?
serve as the origin of the glycogen polymer. correct answers The role of glycogenin is to
glycogen synthase; glycogen phosphorylase; decrease correct answers The hormone insulin
stimulates __________ and inhibits __________, leading to a(n) __________ in the glucose
levels.
C-4 correct answers In the elongation of glycogen, activated glucose units are attached to which
hydroxyl of the terminal residue of the growing glycogen chain?
, a) [Pi]/[glucose 1-phosphate] = 3.5/1
b) The concentration of glucose 1-phosphate is below the equilibrium value. Therefore, the rate
of glucose 1-phosphate removal (through entry into glycolysis) is greater than the rate at which
glucose 1-phosphate is produced by glycogen phosphorylase, so metabolite flow is from
glycogen to glucose 1-phosphate. correct answers Glycogen phosphorylase catalyzes the removal
of glucose from glycogen. The ΔGo' for this reaction is 3.1 kJ/mol.
a) Calculate the ratio of [Pi] to [glucose 1-phosphate] when the reaction is at equilibrium at
298K. (Hint: the removal of glucose units from glycogen does not change the glycogen
concentration.)
b) In muscle cells under physiological conditions, the measured ratio of [Pi]/[glucose 1-
phosphate] is more than 100:1. What does this indicate about the direction of metabolite flow
through the glycogen phosphorylase reaction in muscle?
Choose one answer for part a and one answer for part b.
UDP correct answers In the glycogenesis pathway, what is the leaving group in the last step
where glucose is added to the growing glycogen chain?
Perilipin correct answers Which of the following proteins is activated by phosphorylation during
glucagon-activated fatty acid release from adipocytes?
adrenaline correct answers Because muscles lack receptors for glucagon, what hormone activates
muscle glycogen phosphorylase?
chylomicrons correct answers Which particles transport triacylglycerols to adipose tissue for
storage?
trans double bonds correct answers Partial hydrogenation can result in the formation of
Soaking the dirt with liquid soap does not allow the micelles to form, but rather just coats the
dirt.
Vigorous agitation breaks up the fatty acids into micelles that are then rinsed away with the dirt
inside. correct answers Why is essential to vigorously agitate dirty clothes with liquid soap in
water, why not just let the soap soak into the dirt and then rinse it off? Choose the TWO best
answers.
Pork fat contains 40% palmitate and stearate, whereas flaxseed oil is 53% alpha-linolenate, the
difference in average a melting temperature is about 65ºC, so it makes sense. correct answers
Pork fat has a melting temperature of 40ºC and flaxseed oil has a melting temperature of -24ºC.
What contributes to this ~65ºC difference in melting temperature? Choose the ONE best answer.
running from a bear. correct answers The lipase-mediated release of fatty acids can always be
expected to occur when a person is
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