Biology Quiz on Biomolecules

The living matter is composed of mainly six elements: carbon, hydrogen, oxygen, nitrogen, phosphorus and sulphur. These elements together constitute about 90% of the dry weight of the human body. Chemicals or molecules present in the living organisms are known as biomoleculesDepending upon their weight and solubility biomolecules fall into two categories: micromolecules and macromolecules. Micromolecules may be inorganic or organic and include water gases, minerals, sugars, amino acids, and nucleotides. Macromolecules generally belong to four classes of organic compounds: carbohydrates, lipids, proteins and nucleic acids.
Biology Quiz on Biomolecules
1. Lactose is composed of
glucose and galactose
fructose and galactose
glucose and glucose
glucose and fructose
2. Lipids are insoluble in water because lipid molecules are
neutral
zwitter ions
hydrophobic
hydophilic
3. In which of the following groups are all polysaccharides?
sucrose, glucose and fructose
maltose, lactose and fructose
glycogen, sucrose and maltose
glycogen, cellulose and starch
4. Modern detergents contain enzyme preparations of
alkaliphiles
acidophiles
thermoacidophiles
thermophiles
5. The numbers of molecule of fatty acid present in one molecule of fat is
1
2
3
4
6. The elements that make up 99% of all elements found in living system
C, H, O
C, H, O, N
C, H, O, N, P
C, H, O, P
7. Excess protein, carbohydrate and fats are stored in body as
fat
glycogen
starch
ATP
8. Which of the following substance is required for the normal functioning of the enzymes?
apoenzyme
holoenzyme
cofactor
abozyme
9. Which of the following is a storage protein?
ferroprotein
mucoprotein
glutenins
chromoprotein
10. Protein which play a significant role in aging is
elastin
actin
collagen
myosin
Score =
Correct answers:

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