Exam (elaborations)
UNE Biochem Unit 1 questions and answers
- Course
- Institution
UNE Biochem Unit 1 questions and answers
[Show more]
Content preview
UNE Biochem Unit 1 questions andanswers
Which of the following proteins is likely to have quaternary structure?
a. A protein that contains both a-helix and B-sheet secondary structures
b. A large transmembrane protein with seven a-helical domains
c. A small protein consisting of a single amino acid chain
d. A multimeric protein that contains multiple peptide chains - Answers -d. a multimeric
protein that contains multiple peptide chains
As hemoglobin transitions between the T-state and the R-state, which of the following is
broken as oxygen is added?
a. Hydrogen bonding
b. Iron-Nitrogen links
c. Alpha helixes
d. Salt bridges - Answers -d. salt bridges
Myoglobin is a _____ protein. Hemoglobin is a ______ protein.
a. Monomeric, tetrameric
b. Monomeric, monomeric
c. Tetrameric, tetrameric
d. Tetrameric, monomeric - Answers -a. monomeric, tetrameric
Which of the following amino acids would not be commonly found in the middle of an a-
helix?
a. Valine
b. Leucine
c. Proline
d. Tryptophan - Answers -c. proline
Hemoglobin bound to heme is termed a holoprotein. The heme group (or porphyrin ring)
is required for oxygen binding and it is defined as which of the following?
a. Heteroprotein
b. Prosthetic group
c. Apoprotein
d. Holoprotein - Answers -b. prosthetic group
Cleavage of fructose 1,6-bisphosphate to dihydroxyacetone and glyceraldehyde 3-
phosphate is achieved by what class of enzymes?
a. Lyase
b. Ligase
, c. Transferase
d. Hydrolase - Answers -a. lyase
Which of the following proteins will likely be the most stable and have the lowest energy
state?
a. A protein structure with a high content of random coils
b. A protein structure that is mostly a-helices
c. A structure with a high content of B-sheets
d. A protein structure that is made up of nucleotide folds - Answers -c. a structure with
high content B-sheets
Which of the following coenzymes or cofactors would not typically participate in an
activation transfer reaction?
a. NADH
b. Pyridoxal phosphate (PLP)
c. Coenzyme A
d. Thiamine pyrophosphate
e. Biotin - Answers -a. NADH
Heat can be generated in the brown adipose tissue of hibernating mammals. Which of
the following is the most likely mechanism by which this occurs?
a. A decrease in oxygen consumption
b. Increased ATP production by ATP synthase
c. Expression of a protein that uncouples the ETC
d. An increased pH gradient across the inner mitochondrial membrane - Answers -c.
Expression of a protein that uncouples the ETC
The glycerol 3-phosphate shuttle is the major shuttle of most tissues. Which of the
following best describes the transfer of electrons by this shuttle?
a. Electrons are directly transferred from glycerol 3-phosphate and DHAP
b. Electrons are directly transferred from glycerol 3-phosphate to an NAD containing
glycerol phosphate dehydrogenase
c. Electrons are directly transferred from DHAP (dihydroxacetone) to a FAD containing
glycerol phosphate dehydrogenase
d. Electrons are directly transferred from glycerol 3-phosphate to a FAD containing
glycerol phosphate dehydrogenase - Answers -d. Electrons are directly transferred from
glycerol 3-phosphate to a FAD containing glycerol phosphate dehydrogenase
Which of the following is considered a "free radical" in the Q-cycle?
a. QH2 (quinol)
b. Q (quinone)
c. Q- (semiquinone) - Answers -c. Q- (semiquinone)
Succinate is a substrate for which complex in the electron transport chain?
a. Complex IV (Cyt c oxidase)
b. Complex II (Succinate-Q reductase)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller millyphilip. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now