BIO 116 Final Exam Miami University
Questions with Complete Answers
What is the primary function of triglycerides?
a. Cell communication and signaling
b. Direct source of energy
c. Energy storage
d. Structural - ANSWER-c. Energy storage
Heat-shock proteins are proteins in cells that are expressed during times of stress,
especially thermal stress. These proteins come along other proteins to prevent them
from denaturing (unfolding), and to help them re-fold correctly. What level of protein
structure do heat-shock proteins help preserve?
a. Primary
b. Secondary
c. Tertiary
d. Quarternary - ANSWER-c. Tertiary
Cell membranes have many proteins embedded in them. Many of these proteins
project all the the way across a cell membrane and stick out into the intracellular and
extracellular spaces. Recall that amino acids have different side groups with different
basic properties. Parts of the protein in the middle of the cell membrane are primarily
made up of amino acids with...
a. Non-polar side groups
b. Polar, uncharged side groups
c. Polar, positively charged side groups
d. Polar, negatively charged side groups - ANSWER-a. Non-polar side groups
According to the Homeoviscous Adaptation hypothesis, which of the following
statements is true about cell membranes?
a. Cells acclimated to warmer temperatures should have membranes made of
phospholipids with fewer double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
b. Cells acclimated to warmer temperatures should have membranes made of
phosopholipids with more double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
c. Cells acclimated to dry conditions should have membranes made of
phosopholipids with fewer double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
d. Cells acclimated to dry conditions should have membranes made of
phosopholipids with more double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
e. Cells acclimated to warmer temperatures should have smaller enzymes than cells
acclimated to co - ANSWER-a. Cells acclimated to warmer temperatures should
,have membranes made of phospholipids with fewer double bonds in the fatty acid
tails than cells acclimated to colder temperatures.
Which of the following is NOT part of a nucleotide?
a. 5-carbon sugar
b. amino acid
c. Nitrogenous base
d. Phosphate group - ANSWER-b. amino acid
Neurons must maintain an electrical potential across the membrane in order to be
able to send electrical nerve signals. They do this by transporting positively charged
sodium ions from the inside of the cell to the high-sodium concentration environment
outside of the cell. What type of transport does this involve?
a. Active transport
b. Bulk transport
c. Passive transport - ANSWER-a. Active transport
A fish whose body fluids have an overall solute concentration of 300 mOsm. It lives
in the ocean, which has a concentration of about 1000 mOsm. The ocean is
[hypertonic/hypertonic] to the fish, so water diffuses [into/out of] the fish.
a. Hypertonic, into
b. Hypertonic, out of
c. Hypotonic, into
d. Hypotonic, out of - ANSWER-b. Hypertonic, out of
Which of the following is an accurate differences between prokaryotic and eukaryotic
cells?
a. Prokaryotic cells are larger
b. Eukaryotic cells have nuclei, prokaryotic cells do not
c. Eukaryotic cells have ribosomes, prokaryotic cells do not
d. Eukaryotic cells have DNA, prokaryotic cells do not
e. Prokaryotic cells have cell walls, eukaryotic cells do not - ANSWER-b. Eukaryotic
cells have nuclei, prokaryotic cells do not
Which organelle is most likely to be most prominent in cells of the intestines that are
producing digestive enzymes to break down food in the digestive tract?
a. Free ribosomes
b. Lysozymes
c. Mitochondria
d. Smooth ER
e. Rough ER - ANSWER-e. Rough ER
Nitrogen (N) is more electronegative than hydrogen (H). Which of the following is a
correct statement about the atoms in ammonia (NH3)?
a. The nitrogen atom has a partial positive charge; each hydrogen atom has a partial
negative charge.
b. Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial
negative charge.
c. Ammonia has an overall positive charge.
, d. Ammonia has an overall negative charge. - ANSWER-b. Each hydrogen atom has
a partial positive charge; the nitrogen atom has a partial negative charge.
Which of the following subatomic particles always has a positive charge?
a. Atom
b. Electron
c. Ion
d. Neutron
e. Proton - ANSWER-e. Proton
Changing the number of __________ would change an atom into an atom of a
different element.
a. Bonds formed by an atom
b. Electrons circling the nucleus of an atom
c. Neutrons in an atom
d. Particles in the nucleus of an atom
e. Protons in an atom - ANSWER-e. Protons in an atom
The atoms of different phosphorus isotopes _____.
a. Have different numbers of electrons
b. Have different numbers of neutrons
c. Have different numbers of protons
d. React differently with other atoms - ANSWER-b. Have different number of
neutrons
Hydrogen bonding is most often seen __________.
a. When the bonds within the molecule are non-polar covalent bonds
b. When hydrogen is covalently bonded to an electronegative atom
c. When multiple carbon atoms are present
d. If the molecule consists of three or fewer atoms
e. When the molecule's three-dimensional shape is tetrahedral - ANSWER-b. When
hydrogen is covalently bonded to an electronegative atom
Why are certain isotopes of elements useful in medical imaging technologies?
a. Heavier isotopes move slower and are easier to visualize
b. Radioactive decay of unstable isotopes allow their location and movement within
the body to be visualized
c. Stable isotopes will not produce radioactivity as they decay, thus avoiding harm to
the patient
d. Stable isotopes will persist throughout the test
e. Unstable isotopes will decay and disappear at the end of the medical test -
ANSWER-b. Radioactive decay of unstable isotopes allow their location and
movement within the body to be visualized
How are the hydrogen bonds formed between water molecules?
a. By the attraction between the positive end of one water molecule with the negative
end of the other
b. By sharing of electrons between two water molecules
c. By sharing protons between two water molecules
Questions with Complete Answers
What is the primary function of triglycerides?
a. Cell communication and signaling
b. Direct source of energy
c. Energy storage
d. Structural - ANSWER-c. Energy storage
Heat-shock proteins are proteins in cells that are expressed during times of stress,
especially thermal stress. These proteins come along other proteins to prevent them
from denaturing (unfolding), and to help them re-fold correctly. What level of protein
structure do heat-shock proteins help preserve?
a. Primary
b. Secondary
c. Tertiary
d. Quarternary - ANSWER-c. Tertiary
Cell membranes have many proteins embedded in them. Many of these proteins
project all the the way across a cell membrane and stick out into the intracellular and
extracellular spaces. Recall that amino acids have different side groups with different
basic properties. Parts of the protein in the middle of the cell membrane are primarily
made up of amino acids with...
a. Non-polar side groups
b. Polar, uncharged side groups
c. Polar, positively charged side groups
d. Polar, negatively charged side groups - ANSWER-a. Non-polar side groups
According to the Homeoviscous Adaptation hypothesis, which of the following
statements is true about cell membranes?
a. Cells acclimated to warmer temperatures should have membranes made of
phospholipids with fewer double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
b. Cells acclimated to warmer temperatures should have membranes made of
phosopholipids with more double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
c. Cells acclimated to dry conditions should have membranes made of
phosopholipids with fewer double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
d. Cells acclimated to dry conditions should have membranes made of
phosopholipids with more double bonds in the fatty acid tails than cells acclimated to
colder temperatures.
e. Cells acclimated to warmer temperatures should have smaller enzymes than cells
acclimated to co - ANSWER-a. Cells acclimated to warmer temperatures should
,have membranes made of phospholipids with fewer double bonds in the fatty acid
tails than cells acclimated to colder temperatures.
Which of the following is NOT part of a nucleotide?
a. 5-carbon sugar
b. amino acid
c. Nitrogenous base
d. Phosphate group - ANSWER-b. amino acid
Neurons must maintain an electrical potential across the membrane in order to be
able to send electrical nerve signals. They do this by transporting positively charged
sodium ions from the inside of the cell to the high-sodium concentration environment
outside of the cell. What type of transport does this involve?
a. Active transport
b. Bulk transport
c. Passive transport - ANSWER-a. Active transport
A fish whose body fluids have an overall solute concentration of 300 mOsm. It lives
in the ocean, which has a concentration of about 1000 mOsm. The ocean is
[hypertonic/hypertonic] to the fish, so water diffuses [into/out of] the fish.
a. Hypertonic, into
b. Hypertonic, out of
c. Hypotonic, into
d. Hypotonic, out of - ANSWER-b. Hypertonic, out of
Which of the following is an accurate differences between prokaryotic and eukaryotic
cells?
a. Prokaryotic cells are larger
b. Eukaryotic cells have nuclei, prokaryotic cells do not
c. Eukaryotic cells have ribosomes, prokaryotic cells do not
d. Eukaryotic cells have DNA, prokaryotic cells do not
e. Prokaryotic cells have cell walls, eukaryotic cells do not - ANSWER-b. Eukaryotic
cells have nuclei, prokaryotic cells do not
Which organelle is most likely to be most prominent in cells of the intestines that are
producing digestive enzymes to break down food in the digestive tract?
a. Free ribosomes
b. Lysozymes
c. Mitochondria
d. Smooth ER
e. Rough ER - ANSWER-e. Rough ER
Nitrogen (N) is more electronegative than hydrogen (H). Which of the following is a
correct statement about the atoms in ammonia (NH3)?
a. The nitrogen atom has a partial positive charge; each hydrogen atom has a partial
negative charge.
b. Each hydrogen atom has a partial positive charge; the nitrogen atom has a partial
negative charge.
c. Ammonia has an overall positive charge.
, d. Ammonia has an overall negative charge. - ANSWER-b. Each hydrogen atom has
a partial positive charge; the nitrogen atom has a partial negative charge.
Which of the following subatomic particles always has a positive charge?
a. Atom
b. Electron
c. Ion
d. Neutron
e. Proton - ANSWER-e. Proton
Changing the number of __________ would change an atom into an atom of a
different element.
a. Bonds formed by an atom
b. Electrons circling the nucleus of an atom
c. Neutrons in an atom
d. Particles in the nucleus of an atom
e. Protons in an atom - ANSWER-e. Protons in an atom
The atoms of different phosphorus isotopes _____.
a. Have different numbers of electrons
b. Have different numbers of neutrons
c. Have different numbers of protons
d. React differently with other atoms - ANSWER-b. Have different number of
neutrons
Hydrogen bonding is most often seen __________.
a. When the bonds within the molecule are non-polar covalent bonds
b. When hydrogen is covalently bonded to an electronegative atom
c. When multiple carbon atoms are present
d. If the molecule consists of three or fewer atoms
e. When the molecule's three-dimensional shape is tetrahedral - ANSWER-b. When
hydrogen is covalently bonded to an electronegative atom
Why are certain isotopes of elements useful in medical imaging technologies?
a. Heavier isotopes move slower and are easier to visualize
b. Radioactive decay of unstable isotopes allow their location and movement within
the body to be visualized
c. Stable isotopes will not produce radioactivity as they decay, thus avoiding harm to
the patient
d. Stable isotopes will persist throughout the test
e. Unstable isotopes will decay and disappear at the end of the medical test -
ANSWER-b. Radioactive decay of unstable isotopes allow their location and
movement within the body to be visualized
How are the hydrogen bonds formed between water molecules?
a. By the attraction between the positive end of one water molecule with the negative
end of the other
b. By sharing of electrons between two water molecules
c. By sharing protons between two water molecules
