Neuron Structure Worksheet Questions
With Complete Solution 2026
which structure on the neuron would receive a signal from either a sensory cell (taste
bud, touch receptor, retinal cell) or from another neuron? - Correct Answer-the dendrites
would receive the signal from a sensory cell or another neuron
- Correct Answer-Phospholipid
- Correct Answer-Na+
- Correct Answer-K+
- Correct Answer-Channel
Looking at model 2
which side of the membrane has more sodium ions when the neuron is at rest? -
Correct Answer-The outside of the cell membrane has more sodium ions when the
neuron is at rest
Explain why sodium ions cannot cross the membrane without the use of a protein
channel - Correct Answer-Because Na+ is charged (polar) so it cannot cross through
the hydrophobic interior of the plasma membrane
Which direction should sodium ions flow naturally if a channel is provided? - Correct
Answer-If a channel were provided, Na+ ions would move from their area of higher
concentration outside of the cell to their area of lower concentration inside of the cell
Looking at model 2
Which side of the membrane has more potassium ions when the neuron is at rest? -
Correct Answer-At rest, the inside of the cell membrane has more potassium ions
Which direction should potassium ions flow naturally if a channel is provided ? - Correct
Answer-If a channel were provided, K+ ions would naturally move out of the cell down
their concentration gradient
The embedded proteins in model 2 illustrate both active and passive transport. What
evidence from Model 2 supports the idea that one of the types of embedded proteins
use active transport? - Correct Answer-One of the proteins is moving Na+ ions from an
area of its lower concentration (inside the cell) to an area of its higher concentration. At
the same time it is moving K+ from its area of lower concentration to its area of higher
concentration. This is only possible with active transport
