Introduction:
Which of the following are the most common elements in the bodies of living organisms?
a) hydrogen and oxygen
b) carbon and nitrogen
c) sulphur and phosphorus
d) all of these
Explanation: C, H and O constitute 95%
Which of the following deals with the structure, composition and function of molecules those are present in the bodies of living organisms and chemical processes occurring in them?
a) chemistry
b) biochemistry
c) molecular biology
d) biotechnology
The bonding of H, O and N to……atom forms the compounds called organic compounds.
a) calcium
b) carbon
c) chlorine
d) chromium
Explanation: e.g. C6H12O6 (Glucose)
Which of the following is the most abundant compound found in the protoplasm?
a) glucose
b) amino acids
c) water
d) lipids
Explanation: it form three-fourth part of the body weight
Which of the following organic compound is the most abundant organic compound found in living cell?
a) carbohydrate
b) protein
c) nucleic acid
d) lipid
Explanation: most enzymes and hormones are protein in nature
