What is the direction of sodium ion flow through leak channels in a photoreceptor cell in the dark?
A. from the cytoplasm to the extracellular
space
B. from the smooth endoplasmic reticulum to
the cytosol
C. from the extracellular space into the
cytoplasm
D. from vesicles into the synapse
C
You might also like to view...
Proteins and RNA molecules that are needed in the cell, at about the same level under all growth conditions, require constitutive expression
Indicate whether the statement is true or false.
In the biochemical oxygen demand (BOD) test, the factor that should limit biological activity is ________.
A. phosphorus B. carbon C. nitrogen D. oxygen
What functions can complement proteins perform? (Check all that apply.)
_____ amplify the inflammatory response _____ attract phagocytes to the site of infection _____ bind Fc receptors _____ coat invading microbes _____ insert themselves into the foreign cell's plasma membrane _____ provide immunity in response to immunization _____ store "memories" of specific antigens for months or years
What are the classes of nutrients?
What will be an ideal response?