Chamberlain College Of Nursing > Anatomy & Physiology > Week 2 Quiz 2 ANATOMY BIO 251/ANATOMY BIO 251_Verified Answers.
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Course
BIO 251
Institution
Chamberlain College Of Nursng
Question 1.1. What are the nonpolar parts of phospholipids? (Points : 3)
Phosphate-containing head groups
Fatty acid tail groups
Both the head and tail groups are nonpolar.
Neither the head nor tail groups are nonpolar.
Question 2.2. The polar portion of a cholesterol molecule, which forms hyd...
which forms hydrogen bonds with the polar heads of neighboring phospholipids and glycolipids
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BIO 251
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Question 1.1. What are the nonpolar parts of phospholipids? (Points : 3)
Phosphate-containing head groups
Fatty acid tail groups
Both the head and tail groups are nonpolar.
Neither the head nor tail groups are nonpolar.
Question 2.2. The polar portion of a cholesterol molecule, which forms hydrogen bonds with the polar
heads of neighboring phospholipids and glycolipids, consists of a (Points : 3)
–OH group.
–CH3 group.
–CH4 group.
–COOH group.
None of the above
Question 3.3. This type of membrane protein anchors cells to neighboring cells and to protein
filaments found outside or inside the cell. (Points : 3)
Transporters
Receptors
Ligands
Ion channels
Linkers
Question 4.4. Which of the following does NOT influence the rate of diffusion of a chemical across a
plasma membrane? (Points : 3)
Concentration gradient of the chemical across the membrane
Mass of the diffusing chemical
Distance that the chemical has to diffuse
Amount of ATP available
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