Human Phys - Intro to Physiology
Study Guide & Practice Exam
Questions with Correct Answers
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What are tunnel proteins or transmembrane proteins? - ANSWER ✓
Integral proteins that have passed into lipid bilayer and established a
hydrophobic bond with lipid molecules.
What is the purpose of tunnel proteins? - ANSWER ✓ Form channels
for passage of water and water soluble substance which passes selective
properties for passage of different ions.
How are proteins held? - ANSWER ✓ by both polar and non-polar side
chains
How are extrinsic proteins attached? - ANSWER ✓ Attached covalently
to phospholipid head or non-covalently to transmembrane protein.
What benefit do proteins provide to the plasma membranes? -
ANSWER ✓ Structure and function
What is the function of the conjugated oligosaccharides? - ANSWER ✓
-Recognition center
-Site of attachment
-Antigens
-Provide negative charge to outer surface.
, What is the charge of the cell membrane in resting position? -
ANSWER ✓ more positive outside and more negative inside by them
cation concentration.
T or F:
Phospholipids are amphipathic.
Why or why not? - ANSWER ✓ True; Because they posses both
hydrophilic and hydrophobic ends.
Which is why there is fluidity because they don't represent fused layers.
How is a lipid bilayer formed? - ANSWER ✓ Hydrophobic tails
towards the center of membrane.
What are integral proteins? - ANSWER ✓ Proteins in a voltage gate
that is going to be activated with arrival of the action potential for
allowing the moving of cations and specific to calcium, sodium, and
potassium.
What is the shape of proteins? - ANSWER ✓ fibrous or globular
What is the function of t proteins? - ANSWER ✓ can be carrier,
receptor, or enzymatic.
What do proteins posses? - ANSWER ✓ Both polar and nonpolar side
chains.
Which linkage is towards the outside of proteins? - ANSWER ✓ polar
hydrophilic linkages
Study Guide & Practice Exam
Questions with Correct Answers
Updated 2025 100% Guaranteed
Pass!!!A+ Graded<<Brand New
Version>>
What are tunnel proteins or transmembrane proteins? - ANSWER ✓
Integral proteins that have passed into lipid bilayer and established a
hydrophobic bond with lipid molecules.
What is the purpose of tunnel proteins? - ANSWER ✓ Form channels
for passage of water and water soluble substance which passes selective
properties for passage of different ions.
How are proteins held? - ANSWER ✓ by both polar and non-polar side
chains
How are extrinsic proteins attached? - ANSWER ✓ Attached covalently
to phospholipid head or non-covalently to transmembrane protein.
What benefit do proteins provide to the plasma membranes? -
ANSWER ✓ Structure and function
What is the function of the conjugated oligosaccharides? - ANSWER ✓
-Recognition center
-Site of attachment
-Antigens
-Provide negative charge to outer surface.
, What is the charge of the cell membrane in resting position? -
ANSWER ✓ more positive outside and more negative inside by them
cation concentration.
T or F:
Phospholipids are amphipathic.
Why or why not? - ANSWER ✓ True; Because they posses both
hydrophilic and hydrophobic ends.
Which is why there is fluidity because they don't represent fused layers.
How is a lipid bilayer formed? - ANSWER ✓ Hydrophobic tails
towards the center of membrane.
What are integral proteins? - ANSWER ✓ Proteins in a voltage gate
that is going to be activated with arrival of the action potential for
allowing the moving of cations and specific to calcium, sodium, and
potassium.
What is the shape of proteins? - ANSWER ✓ fibrous or globular
What is the function of t proteins? - ANSWER ✓ can be carrier,
receptor, or enzymatic.
What do proteins posses? - ANSWER ✓ Both polar and nonpolar side
chains.
Which linkage is towards the outside of proteins? - ANSWER ✓ polar
hydrophilic linkages
