BCHM 270 MIDTERM TEST QUESTIONS WITH CORRECT ANSWERS
4 views 0 purchase
Course
BCHM 270
Institution
BCHM 270
BCHM 270 MIDTERM TEST QUESTIONS WITH CORRECT ANSWERS
Intramolecular disulfide bond - Answer-2 C
(1 C can form disulfide bonds with other C groups)
Phosphorylated - Answer-S, T, Y
Alpha helix breakers - Answer-P
Bulky clusters: Y, W, L, V, F
Charged clusters: K, R, H, D, E
Ionizable si...
BCHM 270 MIDTERM TEST QUESTIONS
WITH CORRECT ANSWERS
Intramolecular disulfide bond - Answer-2 C
(1 C can form disulfide bonds with other C groups)
Phosphorylated - Answer-S, T, Y
Alpha helix breakers - Answer-P
Bulky clusters: Y, W, L, V, F
Charged clusters: K, R, H, D, E
Ionizable side chains - Answer-R, K, Y, C, H, E, D
Scurvy - Answer-Caused by impaired hydroxylation of lysine and proline causing
unstable triple helices due to vitamin C deficiency.
Prion disease - Answer-Proteins are refolded from α-helix into β-sheet form, producing
long insoluble fibrils and a loss of function.
Alzheimer's disease - Answer-Abnormal cleavage of the hydrophobic section of a
protein, which causes aggregation into long, insoluble neurotoxic fibrils.
Ostegenesis imperfecta - Answer-Mutation of Gly-X-Y repeating sequences into bulky
amino acids, preventing assembly of helices into a mature collagen fiber (brittle bone
disease).
Respiratory acidosis - Answer-Caused by a sharp increase of carbon dioxide in the
blood.
Sickle cell anemia - Answer-The aggregation of a mutated hemoglobin protein caused
by the substitution of glutamic acid to valine.
Ehlers-Danlos syndrome - Answer-Proteins are refolded from α-helix into β-sheet form,
producing long insoluble fibrils and a loss of function.
Oxidoreductase - Answer-Transfer electrons between molecules; catalyze oxidation-
reduction reactions.
Transferase - Answer-Transfer functional groups between molecules.
Hydrolyase - Answer-Cleaves molecules by the addition of water.
, Lyase - Answer-Adds atoms or functional groups to a double bond or removes them to
form double bonds.
Isomerases - Answer-Move functional groups within a molecule.
Ligases - Answer-Join two molecules in a reaction powered by ATP hydrolysis.
Spontaneous - Answer-Negative ΔG
Requires additional energy - Answer-Positive ΔG
Equilibrium - Answer-ΔG = 0
Exergonic reaction - Answer-Releases energy
Endergonic reaction - Answer-Absorbs energy
Competitive inhibitor - Answer-Binds to substrate-free active site
Vmax doesn't change
Km increases
Uncompetitive inhibitor - Answer-Binds to substrate bound enzyme
Vmax decreases
Km decreases
Noncompetitive inhibitor - Answer-Equal affinity to bind to both substrate bound and free
enzyme
Vmax decreases
Km doesn't change
Mixed inhibitor - Answer-Binds to both substrate bound and free enzyme, but favours
one over other
Vmax decreases
Km increases or decreases
Protein synthesis:
a) Is the transcription of DNA to protein
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 Perfectscorer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.29. You're not tied to anything after your purchase.
