How do carrier proteins recognize substances to transport in active transport? a.
They will allow any substance to pass.
c.
They have a pore that only the substance will fit through.
b.
They have a specific binding site for the substance.
d.
The substance recognizes the carrier protein.

Please select the best answer from the choices provided

A
B
C
D

Explanation:

the answer is B

it would lead to upper respiratory infections and pneumonia.

those characteristics are cellular organization, reproduction, metabolism, homeostasis, heredity, response to stimuli, growth and development, and adaptation through evolution. some things, such as a virus, demonstrate only a few of these characteristics and are, therefore, not alive