Exam (elaborations)

drexel bio 209 final exam Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

1 purchase

Module
TESTS

Institution
TESTS

[Show more]

Preview 3 out of 28 pages

View example

Uploaded on July 10, 2024
Number of pages 28
Written in 2023/2024
Type Exam (elaborations)
Contains Questions & answers

drexel bio 209 final exam questions with 100 actu

Institution TESTS
Education TESTS
Module TESTS

DoctorHkane Member since 4 year 371 documents sold

289

£6.37

Add to cart

Save

100% satisfaction guarantee
Immediately available after payment
Both online and in PDF
No strings attached

drexel bio 209 final exam
weak interactions - ANS-electrostatic
h bonding
van der waals
hydrophobic effect- tendency of non polar molecules to avoid contact with water in aqueous
solutions

chemical bonds - ANS-strong- covalent ( enzymes can change them)
weak/non covalent- protein folding, membranes, transport, substrate binding

neg side chain amino acids - ANS-apartic acid(Asp-D)
glutamic acid (Glu-E)

positive side chain amino acids - ANS-Arginine(Arg-R)
Lysine (Lys-K)
Histidine (His-H)

uncharged polar side chain - ANS-Asparagine (Asn-N)
Glutamine (Gln-Q)
Serine (Ser-S)
Threosine (Thr-T)
Tyrosine (Tyr-Y)

nonpolar amino acids - ANS-alanine (ala- A)
glycine (gly-G)
valine (val-V)
leucine (leu-L)
isoleucine (ile-I)
proline (pro-P)
phenylalanine (phe-F)
methionine (met- M)
tryptophan (trp-W)
cytesine (cys-C)

all amino acids have - ANS-H atom
carboxyl group
amino group
Rgroup (differentiating factor)

Linus Pauling and Robert Corey - ANS-X ray crystallography
- found alpha helix and beta pleated sheets (both interchain H bonding)

,bonds between each amino acid - ANS-peptide bond
amino acid chain= polypeptide backbone
polar and nonpolar amino acids face opp sides in backbone

electrostatic interactions - ANS-between carboxyl and amino group of different amino acids

van der waals interactions - ANS-between methyl group off of side chains

alpha helix - ANS-tightly coiled
rod arrangement of amino acids
R-grop radiates outwards
backbone is repeating units of amino group bonded to carbonyl group
(n+4 rule)
3.6 amino acids per turn
right handed

a helix cont. - ANS-two or more a helices intertwine to form coiled coil (ex. keratin, fibrin,
myosin)
hemoglobin high in a helix content
chymotrypsin lacks a helix

b pleated sheet - ANS-forms sheet by H bonding between amino and carboxyl groups of dif
peptide chains
parallel, antiparallel, mixed
extended polypeptide chains

levels of protein structure - ANS-primary- amino acid residues
secondary- alpha helix
tertiary- polypeptide chain
quaternary- assembled subunits

conservation of protein domains - ANS-humans and drosophilia share portions of the same
amino acid sequences
same protein domains can be found on different proteins

another name for protein assemblies - ANS-polymer
ex. actin filaments

covalent bonds - ANS-disulfide bonds help stabilize protein structure

non covalent bonds - ANS-mediate specificity of binding between molecules

, kinetic properties of enzymes - ANS-increase rate of biological reaction without altering reaction
equilibria
decrease activation energy of a reaction
accelerate reactions through stabilization of transition states
the enzyme active site

enzyme active site - ANS-the catalytic site is 3-d
substrates bound to enzyme by electrostatic, h bonding, van der waals forces, and hydrophobic
interactions

catalytic sites form clefts crevices - ANS-substrate bound within cleft
water excluded
nonpolar character enhances binding of substrate

enzyme substrate complex - ANS-x ray crystallography, electron microscope and
spectrophotometry
enzymes derive power by bringing in favorable substrate orientation
leonor michaelis: reaction rate increases with increasing s until vmax is achieved

saturation effect - ANS-ES complexes form until substrate saturation occurs at which point no
more substrate binding sites are available

reaction rates - ANS-enzymes increase reaction rate by decreasing activation energy

posttranslational regulation enzyme activity - ANS-allosteric regulation
covalent modification
proteolytic modification

allosteric regulation - ANS-feedback inhibition
regulates levels of synthesized end product

covalent modification - ANS-atp phosphorus and water involved
phosphorylation, adenylyation
uridylylation
methylation
ADP ribosylation

proteolytic modification - ANS-digestive enzymes

proof genetic info is stored in DNA - ANS-classes of biochemicals
chromosomes believed to harbor transmissible units
chromosomes have nucleic acids as well as proteins
nucleic acids are the macromolecule that carry cellular genetic material

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 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 DoctorHkane. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.37. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

66662 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy revision notes and other study material for 15 years now

Start selling

Exam (elaborations)

drexel bio 209 final exam Questions with 100% Actual correct answers | verified | latest update | Graded A+ | Already Passed | Complete Solution

Document information

Subjects

Written for

Seller

Reviews received

Content preview