Bio 135 - Exam 1 Questions and
Answers
Ninety-six percent of the human body is composed of the elements:
a. carbon, calcium, sodium, and oxygen
b. carbon, oxygen, iron, and potassium
c. carbon, oxygen, hydrogen, and nitrogen
d. calcium, magnesium, potassium, and iron
e. sodium, potassium, hydrogen, and sulfur - ANSWER c. carbon, oxygen, hydrogen,
and nitrogen
The most abundant element in the human body is:
a. carbon
b. oxygen
c. hydrogen
d. nitrogen
e. calcium - ANSWER b. oxygen
The sugar found in DNA is:
a. ribose
b. sucrose
c. deoxyribose
d. lactose
e. starch - ANSWER c. deoxyribose
Which of these factors will not increase the rate of a chemical reaction?
a. increased temperature
b. increased concentration of reacting particles
c. presence of catalysts
d. decreased temperature
e. decrease in particle size - ANSWER d. decreased temperature
The three particles that make up an atom are:
a. protons, neutrons, and isotopes.
b. neutrons, isotopes, and electrons.
c. positives, negatives, and electrons.
d. protons, neutrons, and electrons. - ANSWER d. protons, neutrons, and electrons.
Isotopes are atoms of the same element with the same number of protons and:
a. a different number of electrons.
b. a different number of molecules.
c. a different number of neutrons.
d. the same number of neutrons. - ANSWER c. a different number of neutrons.
Solutions that contain concentrations of H+ ions lower than pure water:
a. have pH values below 7.
, Bio 135 - Exam 1 Questions and
Answers
b. are acids.
c. are bases.
d. are enzymes. - ANSWER b. are acids.
A monosaccharide is a:
a. carbohydrate.
b. lipid.
c. nucleic acid.
d. protein. - ANSWER a. carbohydrate.
The tiny finger-like projections that increase the surface are of the cell for quicker
absorption are called:
a. desmosomes
b. gap junctions
c. inclusions
d. microvilli
e. tight junctions - ANSWER d. microvilli
Two types passive transport are:
a. osmosis and endocytosis
b. endocytosis and diffusion
c. diffusion and filtration
d. filtration and exocytosis
e. exocytosis and endocytosis - ANSWER c. diffusion and filtration
Which of the following is NOT an active transport process:
a. facilitated diffusion
b. endocytosis
c. exocytosis
d. pinocytosis
e. phagocytosis - ANSWER a. facilitated diffusion
A solution that contains fewer solutes than the cell is:
a. hypotonic
b. hypertonic
c. intravenous
d. isotonic
e. Ringer's lactate - ANSWER a. hypotonic
The diffusion of water across a selectively permeable membrane is called
a. osmotic pressure.
b. osmosis.
c. facilitated diffusion.
d. active transport. - ANSWER b. osmosis.
Answers
Ninety-six percent of the human body is composed of the elements:
a. carbon, calcium, sodium, and oxygen
b. carbon, oxygen, iron, and potassium
c. carbon, oxygen, hydrogen, and nitrogen
d. calcium, magnesium, potassium, and iron
e. sodium, potassium, hydrogen, and sulfur - ANSWER c. carbon, oxygen, hydrogen,
and nitrogen
The most abundant element in the human body is:
a. carbon
b. oxygen
c. hydrogen
d. nitrogen
e. calcium - ANSWER b. oxygen
The sugar found in DNA is:
a. ribose
b. sucrose
c. deoxyribose
d. lactose
e. starch - ANSWER c. deoxyribose
Which of these factors will not increase the rate of a chemical reaction?
a. increased temperature
b. increased concentration of reacting particles
c. presence of catalysts
d. decreased temperature
e. decrease in particle size - ANSWER d. decreased temperature
The three particles that make up an atom are:
a. protons, neutrons, and isotopes.
b. neutrons, isotopes, and electrons.
c. positives, negatives, and electrons.
d. protons, neutrons, and electrons. - ANSWER d. protons, neutrons, and electrons.
Isotopes are atoms of the same element with the same number of protons and:
a. a different number of electrons.
b. a different number of molecules.
c. a different number of neutrons.
d. the same number of neutrons. - ANSWER c. a different number of neutrons.
Solutions that contain concentrations of H+ ions lower than pure water:
a. have pH values below 7.
, Bio 135 - Exam 1 Questions and
Answers
b. are acids.
c. are bases.
d. are enzymes. - ANSWER b. are acids.
A monosaccharide is a:
a. carbohydrate.
b. lipid.
c. nucleic acid.
d. protein. - ANSWER a. carbohydrate.
The tiny finger-like projections that increase the surface are of the cell for quicker
absorption are called:
a. desmosomes
b. gap junctions
c. inclusions
d. microvilli
e. tight junctions - ANSWER d. microvilli
Two types passive transport are:
a. osmosis and endocytosis
b. endocytosis and diffusion
c. diffusion and filtration
d. filtration and exocytosis
e. exocytosis and endocytosis - ANSWER c. diffusion and filtration
Which of the following is NOT an active transport process:
a. facilitated diffusion
b. endocytosis
c. exocytosis
d. pinocytosis
e. phagocytosis - ANSWER a. facilitated diffusion
A solution that contains fewer solutes than the cell is:
a. hypotonic
b. hypertonic
c. intravenous
d. isotonic
e. Ringer's lactate - ANSWER a. hypotonic
The diffusion of water across a selectively permeable membrane is called
a. osmotic pressure.
b. osmosis.
c. facilitated diffusion.
d. active transport. - ANSWER b. osmosis.
