Quiz on Biomolecules

All molecules or chemicals functional in living organisms are known as biomolecules. Proteins, Carbohydrates, Lipids and Nucleic acids  are the most abundant bio molecules. Carbohydrates are nature's most abundant organic substance and principal source of energy.  Fats and their derivatives are together known as lipids. They are heterogeneous group containing mainly carbon, oxygen and hydrogen. Amino acids are the building blocks of proteins. Nucleic acids are the polymer of nucleotides which are major components of all cells. Read more>>

1. What is the general formula for carbohydrates?
(COOH)
(CH2O)n
(C2HO)n
(CHCHCH)
2. Fats and oils are composed of what two groups of molecules?
glucose and fructose
starch and sugar
water and cellulose
fatty acids and glycerol
3. What are the bonds between amino acids called?
covalent bonds
ionic bonds
peptide bonds
hydrogen bonds
4. Which of the following are found in nucleotides of DNA and RNA respectively?
sugars and starches
fats and oils
deoxyribose and ribose
proteins and enzymes
5. Plant cell walls contain large amounts, of what polysaccharide?
cellulose
chitin
carbon
water
6. What is the most common monosaccharide?
cellulose
triglycerides
starches
glucose
7. What are long chains of sugars called?
disaccharides
monosaccharides
polysaccharides
amino acids
8. What structures are found in steroid molecules?
double helixes
molecular rings
waxes
proteins
9. What are the four bases in DNA?

adenine, guanine, cytosine, uracil
first, second, third and fourth
adenine, guanine, cytosine, thymine
nitrogen, hydrogen, carbon and phosphate
10. Muscle cells store energy in the form of
starch
cellulose
glycogen
sterol
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Correct answers: