BCHM 307 QUIZ 2 QUESTIONS WITH VERIFIED ANSWERS
Hydrocarbons will always be (Hydrophilic/hydrophobic) - Answer-Hydrophobic
2 amino acids with sulfur - Answer-Methionine and Cystine
What is the first amino acid in all proteins - Answer-Methionine (Met, M)
What is the start codon? - Answer...
BCHM 307 QUIZ 2 QUESTIONS WITH
VERIFIED ANSWERS
Hydrocarbons will always be (Hydrophilic/hydrophobic) - Answer-Hydrophobic
2 amino acids with sulfur - Answer-Methionine and Cystine
What is the first amino acid in all proteins - Answer-Methionine (Met, M)
What is the start codon? - Answer-Methionine (Met, M)
Three letter start codon - Answer-AUG
Only amino acid with a fused ring system, most proteins have atleast one, absorbs UV
light at 280nm - Answer-Tryptophan (Trp, N)
Only amino acid whose side chain loops back into its own back bone, produces kinks in
a polypeptide sequence - Answer-Proline (Pro, P)
Polar amino acids are often found where? Why? - Answer-in the active sites of enzymes
because they can facilitate chemical catalysis
can form disulfide bonds with itself, condensation reaction, can form interchain
crosslinks - Answer-Cystine (Cys, C)
OH group is key to being polar, other chemicals can covalently bond to the OH group -
Answer-Serine (Ser, S)
OH group is key to being polar, very prominent in nucleophiles - Answer-Threonine
(Thr, T)
Derivative of phenylalanine, precursor of amino acid derivatives that are
neurotransmitters
Polar, uncharged - Answer-Tyrosine (Tyr, Y)
Asparagine (Asn, N) side chain - Answer--CH2-C(=O)-NH2
Glutamine (Gln, Q) side chain - Answer--CH2-CH2-C(=O)-NH2
Asparagine and Glutamine are both (polar/nonpolar) (Charged/uncharged) - Answer-
polar, uncharged
, Nitrogen containing ring, polar/uncharged, doesn't fit into a group well - Answer-
Histidine (His, H)
Both are definitely charged and have long side chains with positively charged amine
groups - Answer-Lysine (Lys, K) and Arginine (Arg, R)
The pK of the nitrogen ring of Histidine is - Answer-6
analogous to asparagine and Glytamine, but these both have carboxylate groups
Low pK, pretty much always deprotonated - Answer-Aspartate and Glutamate
Amino acids are linked via _________. - Answer-condensation (dehydration) reactions
Amino acids are polymerized via - Answer-a peptide bond
A peptide bond it created when - Answer-amino acid #1 (the carboxylic acid) reacts with
the amine group of amino acid #2
4 levels of protein structure - Answer-1. Primary
2. Secondary
3. Tertiary
4. Quaternary
Primary structure definition - Answer-The sequence of amino acid residues
(Glu-Ser-Phe-Gly-Asp-)
Secondary structure definiton - Answer-the localized conformation of the polypeptide
backbone
What protein structure?: first three dimensional folding - Answer-Secondary
What protein structure?:
represented by space filling, "Ribbon Diagram", & "Ball and Stick" - Answer-Secondary
What protein structure?:
alpha helix and beta sheet - Answer-Secondary
H bonds form in an alpha helix between - Answer-the carbonyl oxygen and the amino
hydrogen
What protein structure?:
a folded polypeptide assumes a shape with a hydrophilic surface and a hydrophobic
core - Answer-Tertiary structure
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 $13.79. You're not tied to anything after your purchase.