Biology Final Exam Review Questions with Solution that bring Correct Answers
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Course
BIO 669
Institution
BIO 669
Identify the Dependent variable in this study. - CORRECT ANSWER-Z-score;
performance on questions
Which one of the following moves ions/molecules AGAINST their concentration
gradient? - CORRECT ANSWER-The Na+/K+ pump
A neurotransmitter, (select all that apply) - CORRECT ANSWER-is secreted via...
Biology Final Exam Review Questions
with Solution that bring Correct Answers
Identify the Dependent variable in this study. - CORRECT ANSWER-Z-score;
performance on questions
Which one of the following moves ions/molecules AGAINST their concentration
gradient? - CORRECT ANSWER-The Na+/K+ pump
A neurotransmitter, (select all that apply) - CORRECT ANSWER-is secreted via
exocytosis into the synaptic space;
is secreted in response to increasing cellular calcium ion concentration
Identify the subatomic particles located in the nucleus of an atom. Choose the best
answer. - CORRECT ANSWER-protons and neutrons
Which of the following is/are true about the center portion of the phospholipid bilayer
(hydrophobic tails)? - CORRECT ANSWER-A and C. Allows ions and polar molecules
to pass through and composed of nonpolar fatty acid chains
What will happen to cells with an internal NaCl concentration of 0.09% if they were put
into a solution of 0.9% NaCl? - CORRECT ANSWER-they would shrink
If an amino acid underwent dehydration synthesis with multiple other amino acids, it
would form. - CORRECT ANSWER-protein
Which one or more of the following represents a gradient? (select all that apply) -
CORRECT ANSWER-temperature of the blood in the body core compared to the
temperature of blood in the feet of a wolf when the environmental temperature is -30°C
and
Na+ concentration outside an axon compared to the Na+ concentration inside the axon
at resting potential
Select the FALSE statement below - CORRECT ANSWER-All proteins have quaternary
structure
A synaptic vesicle containing a neurotransmitter, (select all that apply) - CORRECT
ANSWER-has its own membrane consisting of a lipid bilayer a with hydrophobic center
and
originated as part of the larger endomembrane system, for example, the golgi apparatus
, Contact with a particular toxin results in the following three symptoms. There was one
normal action potential in the presynaptic neuron (immediately before the synapse), one
action potential in the postsynaptic neuron (directly beyond the synapse), then
paralysis. Which one of the following would be correct hypotheses for how the toxin
worked? The toxin _. - CORRECT ANSWER-prevented potassium gates from opening
in the presynaptic neuron
After the oxytocin is made it is chemically modified when a sulfur atom in one part of the
molecule bonds with a sulfur atom in another part of the molecule. These two sulfur
atoms bond by evenly sharing an electron. This is - CORRECT ANSWER-a covalent
bond
If a person is poisoned with cyanide, they cannot generate ATP, and die within a few
minutes. In relation to the neuron; what specific impact would cyanide have on neuron
function? - CORRECT ANSWER-The sodium/potassium pump would stop functioning.
What would happen to cells with an internal concentration of 0.9% NaCl if they were put
into a solution of 1.05% NaCl? - CORRECT ANSWER-they would shrink
Your see that your pet plant is wilted even though the potting soil is damp. You would
correctly hypothesize which of the following may be the cause? - CORRECT ANSWER-
The soil water is more salty relative to the root cells and therefore water is moving from
the root cells into the soil.
In a neuron at rest, - CORRECT ANSWER-potassium ions are more concentrated
inside the cell than outside.
Where, in this diagram of an action potential, is sodium moving out of the cell via active
transport? - CORRECT ANSWER-Sodium is always being actively pumped out of the
cell
A cell is treated with a chemical that prevents its division. The cell grows to be larger
and larger. Being extremely large _______. - CORRECT ANSWER-will pose a problem
to the cell since it will decrease its surface-area-to-volume ratio
One afternoon, while rummaging through your grandmother's root cellar, you and a
friend find a jar of canned peaches. Your friend is an absolute peach fiend, so he opens
the jar and eats half of the contents in just a few bites. He offered you the rest, but you
declined. You close up the jar and put it in your grandmother's refrigerator as you go
back upstairs. The next morning, your friend wakes up complaining of nausea and
begins to vomit. Within an hour he is suffering from muscle fatigue. The muscle
weakness/paralysis worsens quickly and his breathing becomes shallow. You rush him
to the hospital, where he is placed on a ventilator to maintain his breathing. Which one
or more of the following may have attributed to his condition? - CORRECT ANSWER-
Either (A) or (C) could have contribute. Blocking receptors in the synapse or Holding the
Na+ channels closed in the axon.
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