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

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.