BIO 116 Final Exam Version Actual
Questions and Answers with complete
solution
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 Ans- 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. Ans- 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 Ans- 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 Ans- 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
Ans- 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 Ans- 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 Ans- 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 Ans- 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 colder temperatures.
f. Cells acclimated to warmer temperatures should have larger enzymes than cells
acclimated to colder temperatures. Ans- 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 Ans- 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 Ans- 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 Ans- 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 Ans- 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 Ans- e. Rough ER
Questions and Answers with complete
solution
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 Ans- 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. Ans- 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 Ans- 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 Ans- 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
Ans- 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 Ans- 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 Ans- 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 Ans- 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 colder temperatures.
f. Cells acclimated to warmer temperatures should have larger enzymes than cells
acclimated to colder temperatures. Ans- 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 Ans- 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 Ans- 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 Ans- 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 Ans- 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 Ans- e. Rough ER
