Question

Bio 277L Spring 2020 Name: Critical Thinking Assignment 3: Sensory Physiology D [?] - G JI H ][ ] 1. Using this diagram, label the following using the word bank below: (5 pts) The type of channel at A (ion and gating mechanism The type of channel at B (bon and gating mechanism) The region at C The type of channel at Dion und gating mechanism The type of channel at e (son and geting mechanism) The region at F The region at G The region at H The region at The general type of molecule at Axon hillock, ligand-G-Na channel, neurotransmitter, axonal, V-G-K channel, V-G-Na channel, synapse, axon terminal, V-G-Ca' channel, dendritic 2. Many diverse types of molecules are perceived as sweet, including different types of sugars and artificial sweeteners. Provide a molecular explanation for why this is possible, given that there is only one type of sweet taste receptor (that we know of!). (2 pts). 3. Fill in the following table about neural transmission. See class notes. (4 pts) Specific stage of synaptic communication disrupted (eg, action potential, graded potential, NT release) Protein affected Type of conotoxin -conotoxin ..conotoxin K-conotoxin 00-conotoxin

need 2 and 3 answered

Answer 1

1. Type of channel at A - V-G-Ca++ channel.

2. Type of channel at B - ligand -gated Na+ channel

3. The region at C- axon hillok

4. Type of channel at D- V-G-K+ channel

5. Type of channel at E- V-G-Na+ channel

6. The region at F- Synapse

7. The region at G- axonal.

8. The region at H- dendritic

9. The region at I - axonal terminal

10. The general type of molecule at J - Neurotransmitter