Biochemistry: Concepts and Connections, 2e (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%
Answer: C
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.1
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
Answer: B
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
3) A large majority of proteins contain ________.
A) Cobalt
B) Phosphorus
C) Selenium
D) Sulfur
Answer: D
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
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 are the only biological polymer that can catalyze biochemical reactions.
Answer: D
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
5) Which of the following is NOT classified as a lipid?
A) Cholesterol
B) Palmitic acid
C) Glycerol
D) Phosphatidyl serine
Answer: C
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
6) Which of the following organic compounds CANNOT be produced without the use of enzymes?
A) Amino acids
B) Urea
C) Hydrogen cyanide
D) Polysaccharides
Answer: D
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
7) ________ are the basis of many biochemical reactions and pathways.
A) Oxidation-reduction reactions
B) Anapleurotic reactions
C) Platinum-catalyzed reactions
D) Combustible reactions
Answer: A
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
8) Many biochemical reactions that form biopolymers from monomeric units involve the removal of ________.
A) CO2
B) Water
C) NH4+
D) PO4-3
Answer: B
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
9) The principle component of a biological membrane is a ________.
A) Triglyceride
B) Carbohydrate
C) Protein
D) Nucleic acid
Answer: A
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
10) The chemical element of ________ has a role in both transfer of energy as well as in the structure of nucleic acids.
A) Carbon
B) Magnesium
C) Phosphorus
D) Zinc
Answer: C
Bloom's Level: 1-2: Remembering/Understanding
Learning Outcome: 1.2
11) Which of the following is NOT a major class of biological macromolecules?