BIO 182 Exam 1 ALL 300 QUESTIONS AND VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR

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BIO 182 Exam 1 ALL 300 QUESTIONS AND VERIFIED
SOLUTIONS LATEST UPDATE THIS YEAR
QUESTION: Which of the following is TRUE regarding chemical synapses? (Select all that apply.)

- ANSWER-Vesicles fuse with the presynaptic membrane to release neurotransmitters into the

synaptic cleft


and


Neurotransmitter is secreted in the synaptic cleft


and


When released from postsynaptic membrane receptors, molecules associated with the

neurotransmitter may be returned to the presynaptic cell.




QUESTION: For the neuron to function it is important to maintain a given resting potential

across the membrane. Which of the following is responsible for keeping the given resting

potential - ANSWER-Sodium-potassium pumps




QUESTION: When a protein is synthesized within the cell, this process represents a chemical

reaction that is: - ANSWER-endergonic and anabolic




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QUESTION: In the action potential shown above, there is a series of celluler events that drive

the change in the membrane potetntial. Choose the cellular event that is NOT dipected

correctly (in other words, there is discrepancy between cellular event and the position that it

occurs). - ANSWER-Position 1 - Sodium channels are in the open position.




QUESTION: What determines the membrane potential of a cell? - ANSWER-The difference in

the concentration of ions and charged molecules in the inside and outside the cell.




QUESTION: The human body has large amounts (i.e., kilograms) of energy stored in the form of

ATP, and given that this is the only form of energy that the body can utilize throughout the day.

- ANSWER-False




QUESTION: Choose the statement that is FALSE when describing a positive feedback. -

ANSWER-It is the most common feedback in life.




According to the chemiosmotic theory, energy is utilized in order to synthesize ATP within the

mitochondria. This energy comes from ______________. - ANSWER-diffusion of protons.



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QUESTION: Energy can be harvested from the glucose molecule and generate ATP ONLY IF:

(Select all that apply - ANSWER-the cell has enzymes that can catalyze reactions in glycolysis

(i.e., PFK)


and


the cell can carry oxidation-reduction reactions




QUESTION: Which of the following statements about the nervous system is FALSE?




It is composed of central nervous systems and peripheral nervous system.




Choline covers the axons of neurons in the peripheral nervous system.




Effectors of the nervous system include muscles or glands.




Some neurons in the human body can be several feet long.




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It is composed of afferent and efferent neurons. - ANSWER-Choline covers the axons of neurons

in the peripheral nervous system.




QUESTION: Which of the following represents an example associated with potential energy? -

ANSWER-electrochemical gradient




QUESTION: In regulatory systems, the phenomenon of negative feedback ______________ -

ANSWER-stimulates a return to set point




QUESTION: Where exactly in the cell membrane of these neurons can you find voltage-gated

Ca2+ channels - ANSWER-end of axons




QUESTION: Energy supports _____________________ to maintain homeostasis, which results

in the well-being of the organism. - ANSWER-systems




QUESTION: Neuronal stimuli are received by: - ANSWER-Dendrites



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