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BIOC 3021 UMN Exam 2 Q&A Already Graded A+ | Approved & Verified $11.99
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BIOC 3021 UMN Exam 2 Q&A Already Graded A+ | Approved & Verified

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  • BIOC 3021

BIOC 3021 UMN Exam 2 Q&A Already Graded A+ | Approved & Verified Proteins that can be classified according to the type and arrangement of secondary structure - (a) Antiparallel α-helix proteins (b) Parallel or mixed β-sheet proteins (c) Antiparallel β-sheet proteins (d) Metal- and disulfid...

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  • December 7, 2024
  • 17
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • BIOC 3021
  • BIOC 3021
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BIOC 3021 UMN Exam 2 Q&A Already

Graded A+ | Approved & Verified


Proteins that can be classified according to the type and arrangement of

secondary structure - ✔✔(a) Antiparallel α-helix proteins

(b) Parallel or mixed β-sheet proteins

(c) Antiparallel β-sheet proteins

(d) Metal- and disulfide-rich proteins

Protein Domains or Modules - ✔✔amino acid sequences

that are used repeatedly in the same protein or that are

found in different proteins

How many proteins domains? - ✔✔40-100

Step 1 of Protein Folding - ✔✔A newly synthesized polypeptide first forms

segments

of secondary structure (α-helix and β-sheet)

step 2 of protein folding - ✔✔These coalesce into a globular structure,

primarily

through hydrophobic interactions

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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

,Step 3 of protein folding - ✔✔The final stable tertiary structure is generated

by small

adjustments to the folded structure

Step 4 of protein folding - ✔✔In the cell, protein folding may require the

assistance of

molecular chaperones

quaternary Structure - ✔✔refers to the association of protein subunits to

form multi-subunit complexes

Monolayers and Micelles - ✔✔produced by amphipathic lipid molecules

interacting with water

Micelles - ✔✔lipid aggregates which have the hydrophobic tails in the

center and polar head groups facing outward

Bilayers - ✔✔produced spontaneously by certain lipids, particularly

phospholipids, instead of micelles

Bilayers - ✔✔Normally wrap around themselves to form closed vesicles,

which

can consist of multiple bilayers.

Liposomes - ✔✔Vesicles with a single lipid bilayer

Liposomes - ✔✔Can be used as drug or enzyme delivery systems in

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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

, therapeutic applications.

the phospholipid bilayer - ✔✔fluid supporting matrix for

membrane proteins, and both lipids and proteins are capable of

lateral and transverse movement.

Peripheral membrane proteins - ✔✔external to the lipid bilayer

Integral membrane proteins - ✔✔extend into or through the lipid bilayer

Lipid-Anchored Membrane Proteins - ✔✔Membrane proteins are covalently

linked to lipid molecules.

Peptidoglycan - ✔✔the strong, protective peptide/

polysaccharide layer of bacterial cell walls

Gram-negative bacteria - ✔✔have the peptidoglycan layer

between two lipid bilayers

Gram-positive bacteria - ✔✔have a thicker peptidoglycan layer external to

a

single lipid bilayer.

Glycoproteins - ✔✔on the cell surface

Proteoglycans - ✔✔in the extracellular matrix

Glycoproteins - ✔✔Proteins with covalently-linked oligo- or

polysaccharide groups
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©JOSHCLAY 2024/2025. YEAR PUBLISHED 2024.

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