Which ion channel is responsible for the rising phase of the action potential, and why?
What will be an ideal response?
Na+ channels, because positive Na+ ions are at higher concentration outside the axon than inside, and so they enter the axon and raise Vm
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Which base is not found in DNA?
A. Cytosine B. Guanine C. Thymidine D. Adenine E. Uracil
The role of the postsynaptic neuron in neural communication is to ____
a. release neurotransmitters b. use gated calcium channels c. contain synaptic vesicles d. block the action of neurotransmitters e. receive the signal from the presynaptic cell
The main antigen presenting cells of the body are:a
macrophages and B cells only. b. macrophages and dendritic cell only. c. dendritic cells and B cells only. d. dendritic cells and plasma cells only. e. macrophages, B cells and dendritic cells.
Painful, blister-like lesions that progressively become filled with pus suggest infection with a (herpesvirus/poxvirus/papillomavirus)
What will be an ideal response?