*1*.*The most abundant bio molecule on the
earth *
a) Nucleic acids
b) proteins
c) lipids
d) carbohydrates
*2. The
major functions of carbohydrates
a) structural framework
b) storage
c) both a and b
d) none of these
*3. The
general formula of carbohydrate is*
a) (CH2O)n
b) (C4H2O)n
c) (C6H2O)n
d) (C2H2O)n COOH
*4.
Carbohydrates are *
a) polyhydroxy aldehydes and phenols
b) polyhydroxy aldehydes and ketones
c) polyhydroxy ketones and phenols
d) polyhydroxy phenols and alcohols
*5.
Structural polysaccharides include*
a) cellulose, hemicellulose and chitin
b) cellulose, starch and chitin
c) cellulose, starch and glycogen
d) cellulose, glycogen and chitin
*6.
Nutritional polysaccharides are*
a) starch and glycogen
b) starch and chitin
c) starch and cellulose
d) starch and glucose
*7. Glycogen
in animals are stored in *
a) liver and spleen
b) liver and muscles
c) liver and bile
d) liver and adipose tissue
*8.
Carbohydrates accounts*
a) 30% in plants and 20% in animals
b) 30% in plants and 10% in animals
c) 30% in plants and 1% in animals
d) 50% in plants and 50% in animals
*9. Smallest
carbohydrates are trioses. Which of the following is a triose?*
a) glucose
b) ribulose
c) ribose
d) glyceraldehyde
*10. Which
of the following is a reducing sugar
a) glucose
b) dihydroxyacetone
c) erythulose
d) none of these
*11. Oligosaccharides linked to proteins
are called *
a) glycoproteins
b) glycolipids
c) galactosides
d) ganglioside
*12. In
polysaccharides, monosaccharaides are joined by*
a) peptide bond
b) glucose bond
c) glycosidic bond
d) covalent bond
*13. Sucrose
is a *
a) monosaccharide
b) disaccharide
c) polysaccharide
d) triose**
*14. Lactose
is a disaccharide consists of*
a) glucose and fructose
b) glucose and galactose
c) glucose and sucrose
d) glucose and ribose
*15. In
lactose, the linkage is*
a) β-1-4 linkage
b) β-1-2 linkage
c) α-1-4 linkage
d) α-1-2 linkage
*15. Maltose
is a disaccharide consists of*
a) glucose and fructose
b) glucose and galactose
c) glucose and sucrose
d) glucose and glucose
*16. In
maltose, the linkage is*
a) β-1-4 linkage
b) β-1-2 linkage
c) α-1-4 linkage
d) α-1-2 linkage
*17. Starch
consists of *
a) unbranched amylose and branched
amylopectin
b) branched amylose and branched
amylopectin
c) unbranched amylose and unbranched
amylopectin
d) none of these
*18.
Cellulose is made up of repeating units of*
a) β-1-4 linkage between D-glucose units
b) β-1-2 linkage between D-glucose units
c) α-1-4 linkage between D-glucose units
d) α-1-2 linkage between D-glucose units
*19.
Amylopectin has*
a) β-1-4 and β-1-6 linkage
b) β-1-2 linkage
c) α-1-4 and α-1-6 linkage
d) α-1-2 linkage
*20. Chitin
consists of*
a) N-acetyl muramic acid
b) N-acetyl glucosamine
c) D-glucose units
d) N-acetyl muramic acid and N-acetyl
glucosamine
*Answers*
*1-d*
*2-c*
*3-a*
*4-b*
*5-a*
*6-a*
*7-a*
*8-c*
*9-d*
*10-a*
*11-a*
*12-c*
*13-b*
*14-b*
*15-d*
*16-c*
------------------------------------------ Best Wishes: Dr.Ehab Aboueladab, Tel:01007834123 Email:ehab10f@gmail.com,ehababoueladab@yahoo.com ------------------------------------------
