Bio 201
Question 1
For each statement, specify whether it is true or false.
Gated channels are for active transport.
Ligand-gated channels open when their ion binds to them.
Leakage channels are a type of gated channel.
Voltage-gated channels open when the membrane they are embedded in undergo a change in electrical condition.
Leakage channels are most common for potassium ions or for chloride ions, but not for calcium or sodium ions.
The ligand that opens a ligand-gated channel also passes through the channel.
When you pull or push on your skin you are opening mechanically-gated channels.
Sodium/potassium pumps are for active transport.
Gated channels have to associate with another membrane protein to open.
In order to open a voltage-gated channel, the membrane potential has to get more positive.
All Answer Choices
A. true
B. false
Question 2
Match each description with the best term.
Used to display the membrane potential during an experiment.
The potential of a cell is measured across this.
Used to penetrate a membrane to detect the voltage inside the cell. microelectrode
When a cell is not active, this is the voltage across its membrane.
All Answer Choices
A. action potential
B. cytosol
C. resting potential
D. microelectrode
E. membrane
F. voltmeter
Question 3
Match each description with the term that best fits it.
A neuron that sends information out of the nervous system is categorized as this.
Touch, temperature, and pain are each examples of this.
When multiple sensory inputs converge, the process of ___ occurs to determine whether a response should be carried out.
A neuron that brings information from the brain to motorneurons in the spinal cord is this.
A sensory neuron is also this.
The neuron that innervates muscle is this.
The sensory receptor picks up the sensory input through this.
Any neuron that is not a sensory or motor neuron can be considered this.
All Answer Choices
A. an action potential
B. integration
C. an afferent
D. an efferent
E. an upper motorneuron
F. perception
G. A lower motorneuron
H. transduction
I. an interneuron
J. a stimulus
Question 4
Order the following from most negative to most positive.
Answer Choices
the resting membrane potential of an electrically-active cell
the membrane potential at the peak of an action potential
the electrical potential of the extracellular fluid
the resting membrane potential of a cell that is not electrically-active
Question 5
Select both correct answers about a bipolar neuron.
.
Answer Choices
It has two nuclei.
It has one axon.
It has one dendrite.
Its dendrite doesn’t branch.
It has multiple dendrites.
It has multiple axons.
Question 6
Sequence these items in order from input to output through a neural circuit.
Answer Choices
muscle contraction
stimulus
interneuron
sensory neuron
motorneuron
