If a cell in the G1 phase is fused with a cell in the S phase, then

#Question id: 11204

#Part-A Aptitude & General Biotechnology

Why do Na+ ions enter the cell when voltage-gated Na+ channels are opened in neurons?

#Question id: 11205

#Part-B Specialized Branches in Biotechnology

What would probably happen if a long neuron had one continuous myelin sheath down the length of the axon with no nodes of Ranvier?

#Question id: 11206

#Part-B Specialized Branches in Biotechnology

Tetrodotoxin blocks voltage-gated sodium channels, and ouabain blocks sodium-potassium pumps. If you added both tetrodotoxin and ouabain to a solution containing neural tissue, what responses would you expect?

#Question id: 11207

#Part-B Specialized Branches in Biotechnology

In multiple sclerosis, the myelin sheaths around the axons of the brain and spinal cord are damaged and demyelination results. How does this disease manifest at the level of the action potential?

 I) Action potentials move in the opposite direction on the axon.

 II) Action potentials move more slowly along the axon.

 III) No action potentials are transmitted.

#Question id: 11208

#Part-B Specialized Branches in Biotechnology

Neurotransmitters are released from axon terminals via ________.

#Question id: 11209

#Part-B Specialized Branches in Biotechnology

Acetylcholine released into the junction between a motor neuron and a skeletal muscle binds to a sodium/potassium channel and opens it. This is an example of ________.