Bio 224 Exam 1 UPDATED ACTUAL Questions and CORRECT Answers
Question: When placed in an aqueous solution, amphipathic molecules will orient themselves with
Correct Answer: hydrophobic hydrocarbon chains in the middle and hydrophilic head groups facing the
water
Question: Subunits sometimes build up to form a macromolecule. Which molecule is least likely to be a
subunit of a macromolecule?
Correct Answer: Steroids
Question: The portion of the amino acid that makes it unique among the 20 different amino acids is
Correct Answer: The side chain or R-group
Question: Radiocarbon (14C) differs from carbon (12C) in that
Correct Answer: 14C has 2 more neutrons than 12C
Question: The most accurate nucleotide base composition of the DNA double helix is
Correct Answer: T+G=A+C
Question: An amino acid is to a protein as a ______ is to a triglyceride
Correct Answer: fatty acid
Question: The sole function of carbohydrates is to serve as energy stores
Correct Answer: False
Question: Saturated fats are composed of fatty acids with several double bonded carbons
Correct Answer: False
Question: Carbon has 4 electrons and hydrogen has 1 electron in its outermost electron shell. A carbon
atom can form covalent bonds with how many hydrogen atoms?
Correct Answer: 4
Question: When one atom loses an electron to another atom, it results in the formation
Correct Answer: cations and anions that can form ionic bonds
Question: The maltose molecule below contains an
Correct Answer: alpha glycosidic linkage
Question: A plant will begin flowering in response to changes in length of daylight, temperature, and light
quality. This is an example of which unifying principle of life?
Correct Answer: Living organisms interact with their environment
Question: Which level of organization includes all of the others in the list?
Correct Answer: population
Question: A flower on a plant represents which level of organization?
Correct Answer: organ
Question: The functional group that characterizes an organic acid is
Question: When placed in an aqueous solution, amphipathic molecules will orient themselves with
Correct Answer: hydrophobic hydrocarbon chains in the middle and hydrophilic head groups facing the
water
Question: Subunits sometimes build up to form a macromolecule. Which molecule is least likely to be a
subunit of a macromolecule?
Correct Answer: Steroids
Question: The portion of the amino acid that makes it unique among the 20 different amino acids is
Correct Answer: The side chain or R-group
Question: Radiocarbon (14C) differs from carbon (12C) in that
Correct Answer: 14C has 2 more neutrons than 12C
Question: The most accurate nucleotide base composition of the DNA double helix is
Correct Answer: T+G=A+C
Question: An amino acid is to a protein as a ______ is to a triglyceride
Correct Answer: fatty acid
Question: The sole function of carbohydrates is to serve as energy stores
Correct Answer: False
Question: Saturated fats are composed of fatty acids with several double bonded carbons
Correct Answer: False
Question: Carbon has 4 electrons and hydrogen has 1 electron in its outermost electron shell. A carbon
atom can form covalent bonds with how many hydrogen atoms?
Correct Answer: 4
Question: When one atom loses an electron to another atom, it results in the formation
Correct Answer: cations and anions that can form ionic bonds
Question: The maltose molecule below contains an
Correct Answer: alpha glycosidic linkage
Question: A plant will begin flowering in response to changes in length of daylight, temperature, and light
quality. This is an example of which unifying principle of life?
Correct Answer: Living organisms interact with their environment
Question: Which level of organization includes all of the others in the list?
Correct Answer: population
Question: A flower on a plant represents which level of organization?
Correct Answer: organ
Question: The functional group that characterizes an organic acid is
