Gated channel proteins can NOT be opened by which of the following?
a
Chemical or electrical signals
b Temperature
C Mechanical force
d All of the above can open gated channel proteins

answer; ///(b) it is composed of four protein chains and four heme groups;

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

option c is the correct answer.

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.