BIO 116 Final Exam Miami University
UPDATED Actual Exam Questions and
CORRECT Answers
What feature of dietary fiber is responsible for its role in maintain gastro-intestinal health?
a. Bonds between glucose molecules are unstable, and the digestive system can break down
the fiber with minimal energy, effort, or strain on the system.
b. Bonds between glucose molecules that cannot be broken by our digestive enzymes
c. Chains consist solely of glucose and no other monosaccharides
d. It comes from plants - CORRECT ANSWER- ✔✔b. Bonds between glucose molecules
that cannot be broken by our digestive enzymes
Which of the following is NOT an example of how hydrogen bonds affect the chemistry of
living organisms?
a. Hydrogen bonds between water molecules keep the main component of cellular and
extracellular spaces liquid across all biologically relevant temperatures.
b. Hydrogen bonds are responsible for the structure of nucleic acids like DNA
c. Hydrogen bonds among amino acids help dictate the secondary structure of proteins
d. The number of hydrogen bonds in fatty acids determines if triglycerides are saturated or
unsaturated. - CORRECT ANSWER- ✔✔d. The number of hydrogen bonds in fatty acids
determines if triglycerides are saturated or unsaturated.
Why would water striders not be able to walk on cyclohexane the way they do on water?
a. No hydrogen bonds form among molecules of cyclohexane, so there is no surface tension
b. Non-polar molecules like cyclohexane do not exist as liquids
c. Polar molecules like cyclohexane in the liquid state do not have surface tension
d. Friction from the water striders' legs on the highly flammable cyclohexane would cause it
to ignite - CORRECT ANSWER- ✔✔a. No hydrogen bonds form among molecules of
cyclohexane, so there is no surface tension
Which of the following types of bonds is the strongest?
a. Covalent
b. Hydrogen
,c. Ionic
d. Organic - CORRECT ANSWER- ✔✔a. Covalent
What property of unstable isotopes make them useful in medial imaging technologies?
a. Unstable isotopes break down and go away after the imaging is complete
b. Unstable isotopes break down, and must be purchased again by the patient, make more
money for the hospital
c. As the unstable isotope decay, radioactivity is released, allowing the location and
movement of the isotopes in the body to be tracked by detection equipment
d. Unstable isotope are not medically useful, only stable isotopes are used in medicine -
CORRECT ANSWER- ✔✔c. As the unstable isotope decay, radioactivity is released,
allowing the location and movement of the isotopes in the body to be tracked by detection
equipment
What is the primary function of triglycerides?
a. Cell communication and signaling
b. Direct source of energy
c. Energy storage
d. Structural - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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.
UPDATED Actual Exam Questions and
CORRECT Answers
What feature of dietary fiber is responsible for its role in maintain gastro-intestinal health?
a. Bonds between glucose molecules are unstable, and the digestive system can break down
the fiber with minimal energy, effort, or strain on the system.
b. Bonds between glucose molecules that cannot be broken by our digestive enzymes
c. Chains consist solely of glucose and no other monosaccharides
d. It comes from plants - CORRECT ANSWER- ✔✔b. Bonds between glucose molecules
that cannot be broken by our digestive enzymes
Which of the following is NOT an example of how hydrogen bonds affect the chemistry of
living organisms?
a. Hydrogen bonds between water molecules keep the main component of cellular and
extracellular spaces liquid across all biologically relevant temperatures.
b. Hydrogen bonds are responsible for the structure of nucleic acids like DNA
c. Hydrogen bonds among amino acids help dictate the secondary structure of proteins
d. The number of hydrogen bonds in fatty acids determines if triglycerides are saturated or
unsaturated. - CORRECT ANSWER- ✔✔d. The number of hydrogen bonds in fatty acids
determines if triglycerides are saturated or unsaturated.
Why would water striders not be able to walk on cyclohexane the way they do on water?
a. No hydrogen bonds form among molecules of cyclohexane, so there is no surface tension
b. Non-polar molecules like cyclohexane do not exist as liquids
c. Polar molecules like cyclohexane in the liquid state do not have surface tension
d. Friction from the water striders' legs on the highly flammable cyclohexane would cause it
to ignite - CORRECT ANSWER- ✔✔a. No hydrogen bonds form among molecules of
cyclohexane, so there is no surface tension
Which of the following types of bonds is the strongest?
a. Covalent
b. Hydrogen
,c. Ionic
d. Organic - CORRECT ANSWER- ✔✔a. Covalent
What property of unstable isotopes make them useful in medial imaging technologies?
a. Unstable isotopes break down and go away after the imaging is complete
b. Unstable isotopes break down, and must be purchased again by the patient, make more
money for the hospital
c. As the unstable isotope decay, radioactivity is released, allowing the location and
movement of the isotopes in the body to be tracked by detection equipment
d. Unstable isotope are not medically useful, only stable isotopes are used in medicine -
CORRECT ANSWER- ✔✔c. As the unstable isotope decay, radioactivity is released,
allowing the location and movement of the isotopes in the body to be tracked by detection
equipment
What is the primary function of triglycerides?
a. Cell communication and signaling
b. Direct source of energy
c. Energy storage
d. Structural - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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 - CORRECT 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.
