Test Bank for Biochemistry Concepts and Connections 1st Edition Appling (2025).

,Biochemistry: .Concepts .and .Connections .(Appling .et .al.)
.Chapter .1 . . Biochemistry .and .the .Language .of .Chemistry


1) The .water .content .in .the .human .body .is .approximately:
A) 90%.
B) 80%.
C) 70%.
D) 60%.
E) 50%.
Answer: . C

2) The .four .most .abundant .chemical .elements .in .living .systems .are:
A) hydrogen, .oxygen, .sulfur .and .phosphorus.
B) hydrogen, .carbon, .nitrogen .and .oxygen.
C) sodium, .potassium, .carbon .and .oxygen.
D) sodium, .potassium, .nitrogen .and .sulfur.
E) carbon, .nitrogen, .oxygen .and .potassium.
.Answer: . B
Objective: . 1.2

3) Nearly .all .proteins .contain:
A) cobalt.
B) phosphorus.
C) selenium.
D) sulfur.
E) none .of .the .above.
.Answer: . D
.Objective: . 1.2
.Global .LO: . G7


4) Which .of .the .following .statements .is .FALSE?
A) Proteins .can .be .structural .components .of .cells.
B) Proteins .can .transmit .signals .between .cells.
C) Proteins .can .transport .molecules .within .cells .and .between .cells.
D) Proteins .can .be .both .hormones .and .hormone .receptors.
E) Proteins .are .the .only .biological .polymer .that .can .catalyze .biochemical
.reactions. .Answer: . E
Objective: . 1.2
.Global .LO:
. G7




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,5) Which .of .the .following .is .NOT .classed .as .a .lipid?
A) Cholesterol
B) Palmitic .acid
C) Glycerol
D) Phosphatidyl .serine
E) Triacylglycerol
.Answer: . C
.Objective: . 1.2
.Global .LO: . G7


6) Amino .acids .and .simple .organic .compounds .like .carbon .dioxide .and .hydrogen .cyanide
.cannot .be .produced .without .the .use .of .enzymes.
Answer: . FALSE
.Objective: . 1.2
.Global .LO: . G7


7) Oxidation-reduction .reactions, .which .are .the .basis .of .many .biochemical .reactions
.and .pathways, .cannot .take .place .in .the .absence .of .oxygen.
Answer: . FALSE
.Objective: . 1.2
.Global .LO: . G7


8) Many .biochemical .reactions .that .form .biopolymers .from .monomeric .units .involve
.the .removal .of .water.
Answer: . TRUE
.Objective: . 1.2
.Global .LO: . G7


9) The .principle .component .of .a .biological .membrane .is .a
.triglyceride. .Answer: . FALSE
Objective: . 1.2
.Global .LO:
. G7


10) The .chemical .element . has .a .role .in .both .transfer .of .energy .as .well .as .in
.the .structure .of .nucleic .acids.
Answer: . phosphorus
.Objective: . 1.2
.Global .LO: . G7


11) List .the .four .major .classes .of .biological
.macromolecules. .Answer: . lipids, .carbohydrates, .proteins,
.nucleic .acids .Objective: . 1.2
Global .LO: . G7




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, 12) An .amphipathic .molecule .provides .the .foundation .for .biological .membranes .because
.they .have .both . and . functional .groups.
Answer: . hydrophobic, .hydrophilic
.Objective: . 1.2
Global .LO: . G7

13) Genomics .is .concerned .with .the .entire . , .while . is .focused .on .identifying
.all .of .the .proteins .of .a .cell.
Answer: . genome, .proteomics
.Objective: . 1.5
Global .LO: . G1




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