BICH 410 EXAM REVIEW QUESTIONS
WITH 100% CORRECT DETAILED
ANSWERS
Which of the following is an example of a heteropolysaccharide? - Answer- hyaluronic
acid
Starch is a mixture of - Answer- amylose and amylopectin.
In plants, the starch component with one non-reducing end is______ and the
component with multiple non-reducing ends is ______. - Answer- amylose, amylopectin
______ uses peripheral membrane proteins that bind a solute on the high-concentration
side of the membrane and release it on the low-concentration side. - Answer- None of
these
Vesicle trafficking of cargo from one compartment of the cell to another depends on -
Answer- SNAREs and scaffold proteins
Unsaturation ________ melting points of fatty acids and lipids that contain them. -
Answer- decreases
All of the following statements regarding the Na+, K+ATPase transporter are true,
EXCEPT: - Answer- It pumps K+ in the thermodynamically favored direction, and Na+in
the opposed direction.
What type of membrane transport means two species move in opposite directions
across a membrane? - Answer- antiport
What is the most important property transporters give membranes? - Answer- selective
permeability
Regarding proteins with N-linked sugars, which of the following is TRUE? - Answer- N-
linked sugars are typically branched.
In glycoproteins, O-linked oligosaccharides are attached to an OH group on _____. -
Answer- threonine
Name the family of membrane proteins used for vesicle membrane fusion. - Answer-
SNAREs
, What is the name of the lipid anchor esterified at the carboxyl terminus of lipid-anchored
proteins? - Answer- glycosyl phosphatidyl inositol anchor
Which of the following is NOT a main function of lipids? - Answer- structure of the
cytoskeleton
Bacterial cell walls are composed of _____. - Answer- peptidoglycans
All of the following statements regarding glucose are true, EXCEPT: - Answer- The
highest numbered chiral carbon is C-6.
The energy for __________ transport comes from the solute concentration, only. -
Answer- facilitated & passive
Which of the following statements about monosaccharide isomers is TRUE? - Answer-
Formation of a hemiacetal, or a hemiketal, creates a new chiral center.
Does trans-oleic acid (not a natural product) have a higher, lower, or the same melting
point than cis-oleic acid? - Answer- higher
The polar head group of glycerophospholipids is found at which carbon of glycerol? -
Answer- C3
On glycerophospholipids, head-group alcohols are esterified to what functional group? -
Answer- phosphate
Which of the following disaccharides is linked by an α(1→6) glycosidic bond? - Answer-
isomaltose
Lipids and proteins in the membrane bilayer move by _______diffusion, but not
______diffusion. - Answer- lateral, transverse
Which of the following is a polysaccharide with one reducing end, but multiple non-
reducing ends? - Answer- Both glycogen and amylopectin.
Which of the following methods will allow you to determine if a solute uses facilitated
diffusion rather than passive (simple) diffusion? - Answer- Measure the transport rate at
several different solute concentrations and look for saturation kinetics.
There are _______ fatty acid(s) in a sphingolipid and _____ fatty acid(s) in a
glycerophospholipid. - Answer- one, two
How many turns of an alpha-helix are required to span 30Å of the hydrophobic center of
a membrane? - Answer- six
WITH 100% CORRECT DETAILED
ANSWERS
Which of the following is an example of a heteropolysaccharide? - Answer- hyaluronic
acid
Starch is a mixture of - Answer- amylose and amylopectin.
In plants, the starch component with one non-reducing end is______ and the
component with multiple non-reducing ends is ______. - Answer- amylose, amylopectin
______ uses peripheral membrane proteins that bind a solute on the high-concentration
side of the membrane and release it on the low-concentration side. - Answer- None of
these
Vesicle trafficking of cargo from one compartment of the cell to another depends on -
Answer- SNAREs and scaffold proteins
Unsaturation ________ melting points of fatty acids and lipids that contain them. -
Answer- decreases
All of the following statements regarding the Na+, K+ATPase transporter are true,
EXCEPT: - Answer- It pumps K+ in the thermodynamically favored direction, and Na+in
the opposed direction.
What type of membrane transport means two species move in opposite directions
across a membrane? - Answer- antiport
What is the most important property transporters give membranes? - Answer- selective
permeability
Regarding proteins with N-linked sugars, which of the following is TRUE? - Answer- N-
linked sugars are typically branched.
In glycoproteins, O-linked oligosaccharides are attached to an OH group on _____. -
Answer- threonine
Name the family of membrane proteins used for vesicle membrane fusion. - Answer-
SNAREs
, What is the name of the lipid anchor esterified at the carboxyl terminus of lipid-anchored
proteins? - Answer- glycosyl phosphatidyl inositol anchor
Which of the following is NOT a main function of lipids? - Answer- structure of the
cytoskeleton
Bacterial cell walls are composed of _____. - Answer- peptidoglycans
All of the following statements regarding glucose are true, EXCEPT: - Answer- The
highest numbered chiral carbon is C-6.
The energy for __________ transport comes from the solute concentration, only. -
Answer- facilitated & passive
Which of the following statements about monosaccharide isomers is TRUE? - Answer-
Formation of a hemiacetal, or a hemiketal, creates a new chiral center.
Does trans-oleic acid (not a natural product) have a higher, lower, or the same melting
point than cis-oleic acid? - Answer- higher
The polar head group of glycerophospholipids is found at which carbon of glycerol? -
Answer- C3
On glycerophospholipids, head-group alcohols are esterified to what functional group? -
Answer- phosphate
Which of the following disaccharides is linked by an α(1→6) glycosidic bond? - Answer-
isomaltose
Lipids and proteins in the membrane bilayer move by _______diffusion, but not
______diffusion. - Answer- lateral, transverse
Which of the following is a polysaccharide with one reducing end, but multiple non-
reducing ends? - Answer- Both glycogen and amylopectin.
Which of the following methods will allow you to determine if a solute uses facilitated
diffusion rather than passive (simple) diffusion? - Answer- Measure the transport rate at
several different solute concentrations and look for saturation kinetics.
There are _______ fatty acid(s) in a sphingolipid and _____ fatty acid(s) in a
glycerophospholipid. - Answer- one, two
How many turns of an alpha-helix are required to span 30Å of the hydrophobic center of
a membrane? - Answer- six
