The lipase-mediated release of fatty acids can always be expected to occur when a person is correct answers running from a bear.
The role of glycogenin is to correct answers serve as the origin of the glycogen polymer.
Which particles transport triacylglycerols to adipose tissue for storage? ...
BIOC 385 Exam 2 || A+ Verified Solutions.
The lipase-mediated release of fatty acids can always be expected to occur when a person is
correct answers running from a bear.
The role of glycogenin is to correct answers serve as the origin of the glycogen polymer.
Which particles transport triacylglycerols to adipose tissue for storage? correct answers
chylomicrons
Order the following steps in glycogen particle synthesis.
The glycogen synthase activity of glycogenin uses UDP-glucose to extend the chain up to 7
residues.
The glycogen synthase activity of glycogenin forms an α-1,4 glycosidic bonds that adds UDP-
glucose to an O-linked glucose residue.
The glycogen synthase activity of glycogenin forms an α-1,4 glycosidic bond that adds UDP-
glucose to an O-linked glucose disaccharide.
Glycogen synthase uses UDP-glucose to form α-1,4 glycosidic bonds that add to the glycogenin
primer
A branching enzyme adds α-1,6 linkages
The glycosyltransferase activity of glycogenin adds UDP-glucose to a tyrosine residue in
glycogenin. correct answers 4 2 3 5 6 1
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. correct answers
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.
Individuals with McArdle's disease has defects in muscle glycogen phosphorylase. As a result,
individuals with McArdle's disease have an exercise intolerance with fatigue and cramps,
however, after a period of exercise they experience a "second wind" of energy. The second wind
results from cardiovascular adjustments that allow glucose to be mobilized from liver glycogen
to fuel muscle contraction, though this is less efficient.
Choose the ONE best answer below that explains why the amount of ATP derived in the muscle
from circulating glucose is less than the amount of ATP that would be obtained by mobilizing
the same amount of glucose from muscle glycogen. correct answers The conversion of glucose to
, lactate in muscle generates 2 ATP. If muscle glycogen could be mobilized, the energy yield
would be 3 ATP, since phosphorolysis of glycogen bypasses the hexokinase-catalyzed step of
glycolysis that consumes ATP.
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.
correct 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.
What would be the cost in ATP per glucose residue if glycogen phosphorylase and glycogen
synthase removed and added glucose, respectively, to the ends of glycogen at the same time?
Assume that the glucose used in these reactions comes from glucose-6P. Choose the ONE best
answer. correct answers 1 ATP/glucose residue
Predict the structure of a fatty acid that is trans 16:2 (Δ9,11). correct answers CH3-CH2-CH2-
CH2-CH=CH-CH=CH-CH2-CH2-CH2-CH2-CH2-CH2-CH2-COOH
Reading from left to right (CH3 to COOH), it's a 5,7 double bond
Starting from a molecule of glucose imported from the blood, what is the energy cost for adding
that molecule of glucose to a growing glycogen chain? correct answers 2 ATP
What explains the asymmetrical distribution of membrane lipids in the plasma membrane of
animal cells? Choose ONE best answer. correct answers The outer layer contains mostly
sphingolipids and the inner layer contains mostly glycerophospholipids because of differential
signaling and fluidity properties.
Ambiguous gender is a genetic condition that often arises from defects in the steroidogenesis
pathway. Which enzyme is most likely responsible for an XY chromosome male developing as
mostly female and lacking fully developed male genitalia? correct answers Steroid-5-alpha-
reductase
Why is less ATP obtained from the average carbon in a sugar molecule than from a carbon in a
fat molecule? correct answers The correct answer is not given
*The carbons in fatty acids are a more reduced form of carbon than those in sugars.*
Which type of fatty acid plays important roles in cell recognition such as in ABO blood groups?
correct answers gangliosides
How many total NADH + FADH2s are made in the β-oxidation pathway from the breakdown of
the following fatty acid to all acetyl-CoAs? correct answers 4
Which of the following statements is true concerning ketogenesis? correct answers The correct
answer is not given.
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