Match the following carbohydrate molecules with the class of molecule that they belong to:
molecules; (i) glucose; (ii) starch; (iii) sucrose
classes: a) polysaccharides b) disaccharides c) monosaccharides
a) i-a; ii-b; iii-c
b) i-b; ii-a; iii-c
c) i-c; ii-a; iii-b
d) i-c; ii-b; iii-a

Carbohydrates are classified according to the number of saccharides they contain. Monosaccharide are called as such for containing only one saccharide like glucose. Disaccharides for containing two saccharide units for instance sucrose which is formed from two glucose molecules. Laslty, polysaccharides for carbohydrates containing more than two saccharide units an example is starch. Thus, the answer is D.

Mitochondria is the cell organelle that produced the energy that is needed in the body system in form of atp, that is why it is called the power house of the cell. energy is needed by the living organisms to carry out the activities which sustain life.  if the mitochondria is destroyed atp will not be produced. if the mitochondria is destroyed, energy production will stop and the affected living organism will not have the energy to carry out the necessary life processes; this will lead to the death of the organism.