Bio Final Exam

Question 1

What is the correct sequence of sensory processing when you hear the buzzing of a bee?

Answer 1

reception →transduction →transmission →perception

Question 2

Receptor potentials differ from action potentials because,

Answer 2

Receptor potentials are proportional to the intensity of the stimulus, while action potentials always have the same amplitude

Question 3

____carry action potentials from the PNS to the CNS. _____make a decision based upon the input, and the _____ carries action potentials from the CNS to the PNS to initiate a response.

Answer 3

Sensory neurons, Interneurons, motor neurons

Question 4

Which type of muscle typically surrounds hollow tubes and organs like the stomach?

Answer 4

smooth muscles

Question 5

The “threshold” potential of a membrane is the

Answer 5

minimum depolarization needed to open voltage-gated sodium channels.

Question 6

In the brain and spinal cord, processing centers located in the ____are connected by bundles of axons located in the

Answer 6

gray matter, white matter

Question 7

Which of the folowing correctly indicates the hierarchy of skeletal muscle organization from SMALLEST TO LARGEST

Answer 7

sarcomere, myofibril, muscle fiber, muscle

Question 8

Following the flow of calcium ions into the axon terminal via voltage-gated calcium ion channels, how do neurotransmitters from the presynaptic neuron reach the synaptic cleft?

Answer 8

They are released into the cleft when the neurotransmitter vesicles fuse with the plasma membrane of the presynaptic neuron.