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BCH Exam 4 questions with 100% correct answers
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BCH Exam 4 questions with 100% correct answers
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BCH Exam 4Light dependent ATP synthesis is called ______. - correct answer ✔✔Photophosphorylation
Catabolism of ______ results in the formation of β-alanine or β-aminoisobutyrate. - correct answer
✔✔pyrimidines
The effect of epinephrine upon the liver is most similar to which of the following hormones? - correct
answer ✔✔Glucagon
What organelle is found in much higher amounts in brown adipose tissue than white adipose tissue? -
correct answer ✔✔Mitochondria
Under anaerobic conditions, _____ is produced in the muscle and is then used by the liver for _____. -
correct answer ✔✔Lactate; gluconeogenesis
The end product of fatty acid synthesis by fatty acid synthase is palmitate. Humans are therefore unable
to synthesize fatty acid chains that are longer than 16 carbon atoms. T/F - correct answer ✔✔False
Acyl carrier protein contains the same prosthetic group as - correct answer ✔✔Coenzyme A
Which of the pathways for nucleotide biosynthesis builds the base ring on a PRPP molecule? - correct
answer ✔✔Purine
The β cells of the islets of Langerhans secrete ______ in response to ______ glucose levels; the α cells
release _____ in response in response to ____ glucose levels. - correct answer ✔✔Insulin, high;
Glucagon, low
Fructose-6-phosphate and ______ are used to make sucrose. - correct answer ✔✔UDP-glucose
, Which organs have the capacity to generate glucose through gluconeogenesis? - correct answer ✔✔Liver
and kidneys
Which step is bypassed in some of the rounds of β-oxidation in the catabolism of unsaturated fatty
acids? - correct answer ✔✔Step 1
Which chemical group is present on the PLP cofactor that is not found on any amino acid side chain? -
correct answer ✔✔Aldehyde
Ketone bodies are produced in the _____ and used by the _____ only under conditions such as a
prolonged fast. - correct answer ✔✔Liver; brain
A complex of antenna pigments is called a ______. - correct answer ✔✔light-harvesting complex (LHC)
The process of converting NO3- to N2 is called - correct answer ✔✔Denitrification
Nitrogenase carries out the reaction that reduces nitrogen to ______. - correct answer ✔✔NH3
The light harvesting complex is arranged so that photoreceptors that absorb photons with the longest
wavelengths are - correct answer ✔✔Closest to the reaction center chlorophyll
The energy-transferring processes that are most important for photosynthesis are - correct answer
✔✔Exciton transfer and photooxidation
Cells can obtain cholesterol by taking up ______ via receptor-mediated endocytosis. - correct answer
✔✔LDL
Under conditions of very high light intensity, excess absorbed solar energy is dissipated by the action of
"photoprotective" proteins in the thylakoid membrane. How would the proton gradient across the
membrane influence these proteins? - correct answer ✔✔Low pH in the lumen would activate these
proteins
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