TEST BANK
Principles of Medical Biochemistry,
4th Edition by Gerhard Meisenberg
Complete Chapters Test
Bank are included
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** All Chapters included
,Test Bank - Chapter 01
Overview Incorrect Correct
Question 3 of 5
Which of the following is a characteristic of covalent bonds that is not shared by covalent bonds?
Formed in irreversible reactions.
Because noncovalent bonds form and break constantly, all noncovalent interactions are reversible.
ii❖ME Constantly forming and breaking on the molecular time scale.
Because noncovalent bonds form and break constantly, all noncovalent interactions are reversible.
iiiiHiM,► Susceptible to cleavage by strong acids and bases.
Because noncovalent bonds form and break constantly, all noncovalent interactions are reversible.
Classified as energy-rich, because they are cleaved easily.
Because noncovalent bonds form and break constantly, all noncovalent interactions are reversible.
Independent of the solvent that surrounds the bond-forming groups.
Because noncovalent bonds form and break constantly, all noncovalent interactions are reversible.
Question 4 of 5
What is the difference between a-D-glucose and a-D-galactose?
They are mirror images of each other.
Galactose is a C-4 epimer of glucose (and vice versa). Epimers are not mirror images of one another because other asymmetric carbons are also
present in the molecule.
They differ in the configuration of substituents at C-4.
Galactose is a C-4 epimer of glucose (and vice versa). Epimers are not mirror images of one another because other asymmetric carbons are also
present in the molecule.
iiiiHHi,► One is an aldose and the other is a ketose.
Galactose is a C-4 epimer of glucose (and vice versa). Epimers are not mirror images of one another because other asymmetric carbons are also
present in the molecule.
They are anomers.
Galactose is a C-4 epimer of glucose (and vice versa). Epimers are not mirror images of one another because other asymmetric carbons are also
present in the molecule.
One forms only O-glycasidic bonds, and the other forms only N-glycosidic bonds.
Galactose is a C-4 epimer of glucose (and vice versa). Epimers are not mirror images of one another because other asymmetric carbons are also
present in the molecule.
Question 5 of 5
A patient consumes an excessive amount of sodium bicarbonate to treat his heartburn. Which of the following values for total plasma CO2 and plasma
pH are expected as a result? The normal total CO2 is 22 to 30 mmol/L, and the normal pH is 7.40.
CO2: 25 mmol/L; pH: 7.35
The bicarbonate makes the blood slightly alkaline, and the respiratory center compensates by reduced breathing. Reduced breathing raises the
plasma CO2.
iiiiHM&► CO2: 15 mmol/L; pH: 7.45
The bicarbonate makes the blood slightly alkaline, and the respiratory center compensates by reduced breathing. Reduced breathing raises the
plasma CO2.
CO2: 15 mmol/L; pH: 7.35
The bicarbonate makes the blood slightly alkaline, and the respiratory center compensates by reduced breathing. Reduced breathing raises the
plasma CO2.
li·MM, CO2: 40 mmol/L; pH: 7.45
The bicarbonate makes the blood slightly alkaline, and the respiratory center compensates by reduced breathing. Reduced breathing raises the
plasma CO2.
CO2: 40 mmol/L; pH: 7.35
The bicarbonate makes the blood slightly alkaline, and the respiratory center compensates by reduced breathing. Reduced breathing raises the
plasma CO2.
,Test Bank - Chapter 01
Overview Incorrect Correct
Question 1 of 5
What is the major difference between glycogen and amylase?
Glycogen contains only glucose, and amylose contains some fructose in addition to glucose.
Glycogen is a branched polysaccharide similar to amylopectin, a form of starch that is found together with unbranched amylose in the starch
granules of plants.
( Glycogen is a storage polysaccharide, and amylose is a structural polysaccharide of the extracellular matrix.
Glycogen is a branched polysaccharide similar to amylopectin, a form of starch that is found together with unbranched amylose in the starch
granules of plants.
~ Glycogen is branched, and amylose is not.
Glycogen is a branched polysaccharide similar to amylopectin, a form of starch that is found together with unbranched amylose in the starch
granules of plants.
( Glycogen contains some 13linkages, but amylose contains only a linkages.
Glycogen is a branched polysaccharide similar to amylopectin, a form of starch that is found together with unbranched amylose in the starch
granules of plants.
( Glycogen is stored in the liver, and amylose is stored in skeletal muscle.
Glycogen is a branched polysaccharide similar to amylopectin, a form of starch that is found together with unbranched amylose in the starch
granules of plants.
Question 2 of 5
13Linkages are important in structural polysaccharides. Which structural feature determines their mechanical properties?
'- They are easily hydrolyzed by glycosidase enzymes.
Cellulose, chitin, and peptidoglycan are examples off1brous polysaccharides that are formed from 13-linked units.
( They allow the chains to form compact coils.
Cellulose, chitin, and peptidoglycan are examples off1brous polysaccharides that are formed from 13-linked units.
IHHB ~ They cause the chains to exist in an extended form, thus allowing them to form fibers.
Cellulose, chitin, and peptidoglycan are examples off1brous polysaccharides that are formed from 13-linked units.
C They cause the chains to absorb more water.
Cellulose, chitin, and peptidoglycan are examples off1brous polysaccharides that are formed from 13-linked units.
C They can be formed by any hydroxy group in the monomer, whereas a linkages can be formed only by C-1.
Cellulose, chitin, and peptidoglycan are examples off1brous polysaccharides that are formed from 13-linked units.
, Test Bank - Chapter 02
Overview Incorrect Correct
Question 2 of 12
The side chain of which amino acid is most likely to be found in the center of a tightly packed, water-soluble globular protein such as myoglobin?
'- Serine
The leucine side chain is hydrophobic. Hydrophobic amino acid side chains aggregate in the core of globular proteins, to avoid contact with the
surrounding water.
( Glutamine
The leucine side chain is hydrophobic. Hydrophobic amino acid side chains aggregate in the core of globular proteins, to avoid contact with the
surrounding water.
•Hihfo•► ~ Aspartate
The leucine side chain is hydrophobic. Hydrophobic amino acid side chains aggregate in the core of globular proteins, to avoid contact with the
surrounding water.
( Leucine
The leucine side chain is hydrophobic. Hydrophobic amino acid side chains aggregate in the core of globular proteins, to avoid contact with the
surrounding water.
( Arginine
The leucine side chain is hydrophobic. Hydrophobic amino acid side chains aggregate in the core of globular proteins, to avoid contact with the
surrounding water.
Question 3 of 12
Histones are proteins that bind to negatively charged phosphate groups of DNA. The side chain of which amino acid in the histones that can contribute
to this binding?
Valine
The lysine side chain carries a positive charge at pH values near 7.
( Lysine
The lysine side chain carries a positive charge at pH values near 7.
•Hihfo•► ~ Aspartate
The lysine side chain carries a positive charge at pH values near 7.
( Cysteine
The lysine side chain carries a positive charge at pH values near 7.
( Glutamic acid
The lysine side chain carries a positive charge at pH values near 7.
Question 4 of 12
Which of the following statements about protein structure is correct?
(._ The a-helix is stabilized primarily by ionic interactions between the side chains of amino acids.
Protein conformation is established by noncovalent interactions between functional groups of the polypeptide, sometimes aided by helper
proteins called chaperones. Disulfide bonds are formed between cysteine side chains that have been brought into close proximity during the initial
folding process.
iiiihfo,► ~ Cytoplasmic proteins generally contain disulfide bonds.
Protein conformation is established by noncovalent interactions between functional groups of the polypeptide, sometimes aided by helper
proteins called chaperones. Disulfide bonds are formed between cysteine side chains that have been brought into close proximity during the initial
folding process.
( The a helix is more extended than the 13-pleated sheet.
Protein conformation is established by noncovalent interactions between functional groups of the polypeptide, sometimes aided by helper
proteins called chaperones. Disulfide bonds are formed between cysteine side chains that have been brought into close proximity during the initial
folding process.
( The denaturation of proteins is in most cases reversible by slow cooling.
Protein conformation is established by noncovalent interactions between functional groups of the polypeptide, sometimes aided by helper
proteins called chaperones. Disulfide bonds are formed between cysteine side chains that have been brought into close proximity during the initial
folding process.
