Which of the following refers to the process of hydrolysis?

a.) in hydrolysis, a molecule of water is released when two molecules are joined together.

b.) the end result of hydrolysis is a chain of molecules such as a polysaccharide.

c.) water is needed for hydrolysis to take place.

d.) hydrolysis is the process in which plants and animals create complex molecules such as carbohydrates and proteins.

The answer is: C.) Water is needed for hydrolysis to take place.

Explanation:

Hydrolysis is the process where a molecule of water react with another molecule and its result is the division of the molecule of water. The atoms of the molecule of water become part of other structures before the separation. Taking this into account, answer A is wrong, because there is no released of water, answer B is also wrong because the result is not neccesarily a chain of molecules, answer D is not true because it no referes to a process that involves plants and animals. Answer C is correct.  

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds