The best answer is B - Proteins.
Proteins make up enzymes, or to put it another way enzymes are made up of protein. It is enzymes that speed up the chemical reactions. Enzymes are organic catalysts, substances that speed up a (biochemical) reaction but do not take part in the reaction and remain unchanged at the end of the reaction.
In man, there are many enzymes. The majority of these are found in the digestive system where they greatly aid the process of food breakdown from complex molecules to simple molecules. Examples include salivary amylase found in saliva, which begins the gradual breaking down of starch into glucose right from the moment food is placed in the mouth and mixed with saliva. Pepsin in the stomach breaks down protein.
<u>Answer:</u>
Cancer cells attached to organs.
<u>Explanation:</u>
The cells which have lost their ability to divide in a controlled manner are categorized as cancer cells.
Cancer cells undergo the process of cell division uncontrollably without stopping which results in the development of cancerous tissues within the body.
Moreover, these cells can form in any of the organs of the body to which several reasons are associated for being responsible for the formation of these cells.
