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BIO 353 (Cell Biology) Exam 1 Study Questions and Answers Arizona State University $14.79   Add to cart

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BIO 353 (Cell Biology) Exam 1 Study Questions and Answers Arizona State University

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  • BIO 353
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  • BIO 353

BIO 353 (Cell Biology) Exam 1 Study Questions and Answers Arizona State University

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  • September 12, 2024
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  • BIO 353
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BIO 353 (Cell Biology) Exam 1 Study
Questions and Answers Arizona State
University
What are protein domains?
Verified Answer -Subdivisions of protein structures


What do biological functions of proteins depend on?
Verified Answer -Chemical properties of its surface and how it binds to
other molecules called ligands


An allosteric regulator in glycolysis, AMP interacts with
phosphofructokinase by binding to:
a. its active site
b. a site that the subtract of this enzyme also binds
c. a site on the enzyme that is not the active site
Verified Answer -c. a site on the enzyme that is not the active site


What are biological membranes?
Verified Answer -Hydrophobic permeability barrier comprised of
amphipathic molecules


What enables selective permeability?
Verified Answer -Transport proteins


What is the lipid bilayer composed of?
Verified Answer -phospholipids, glycolipids, sterols (cholesterols,
phytosterols, and hopanoids)

, What is the most abundant type of lipid in the biological membrane?
Verified Answer -Phospholipids


What is amphipathic?
Verified Answer -molecules that have both hydrophobic and hydrophilic
characteristics.


What are the different types of movements phospholipids do within
membranes?
Verified Answer -1. rotation and flexion
2. lateral diffusion
3. transverse diffusion/ flip-flop


Where does membrane phospholipid synthesis occur?
Verified Answer -In the ER on the cytosolic side


What do scramblases do?
Verified Answer -in the ER membrane, scramblases flip the
phospholipids to the inner leaflet to create the 1:1 ratio


When is the only time the membrane function properly?
Verified Answer -Only when it is in the fluid state (temperature above its
Tm)


What is in charge of regulating membrane fluidity?
Verified Answer -Homeoviscous adaptation

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