Entry Test MCQ :: Biological Molecules

11.  Which statement is true about an aqueous medium:
A. Ionic as well as non ionic substance in aqueous media retains their identity. B. Enzymes can not perform catalysis reaction in this medium.
C. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions. D. It is less favorable media for chemical reactions.

12.  Which of the following substance is most favorable to form structural component of biological membranes?
A. Hydrophilic Carbohydrates B. Hydrophobic fats.
C. Both a and b D. None of these

13.  The number of calories required to raise the temperature of 1g of water from 15 to 16?C is called?
A. Specific Heat of Vaporization B. Specific Heat capacity
C. Caloric Heat D. Both A and C

14.  The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is:
A. High specific heat of vaporization B. High specific heat capacity
C. Its Dipole nature D. Its liquid state

15.  Specific heat of vaporization of water is:
A. 574 Kcal/kg B. 674 Kcal/kg
C. 774 Kcal/kg D. 874 Kcal/kg

16.  A complex substance which on hydrolysis yields polyhydroxy aldehyde or ketone subunits is called:
A. Lipid B. Carbohydrate
C. Protein D. Carotein

17.  Cn(H2O)n. is a general formula of :
A. Monosaccharides B. Oligosaccharides
C. Ploysacharides D. Carbohydrates

18.  Which of the statement is not true for compounds like glycoprotein and glycolipids?
A. They are conjugated molecules of carbohydrates B. Both have role in the extra cellular matrix of animals and bacterial cell wall
C. They are components of biological membranes. D. Both are produced and secreted by endoplasmic reticulum

19.  Which one are most complex sugar:
A. Monosaccharides B. Oligosaccharides
C. Polysaccharides D. None of these

20.  Which of the following carbohydrate is tasteless?
A. Monosaccharide B. Oligosaccharide
C. Polysaccharide D. None of these

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