BIO216: Chemistry Of Carbohydrates, Lipids & Nucleic Acids TMA1

Question 1 : Stereoisomers that are nonsuper imposible mirror images of each other are called _____
A. anomers
B. epimers
C. enantiomers
D. diastereoisomers

Question 2 : Which of these statements is not true of monosaccharides ?
A. monosaccharides are soluble in water
B. monosaccharides are soluble in organic solvents
C. monosaccharides are colourless crystalline solids.
D. monosaccharides are insoluble in organic solvents

ANSWER TO QUESTION 2 IS B. monosaccharides are soluble in organic solvents

Question 3 : Which of these reagents cannot be used to determine a reducing sugar
A. Fehling’s
B. Tollens’
C. Benedict’s
D. Wohl’s

ANSWER TO QUESTION 3 IS D. wohl’s

Question 4 : A monosaccharide with a carbonyl function on one of the inner atoms of the carbon chain is classified as a
A. glyceraldehyde
B. aldose
C. ketose
D. empirose

ANSWER TO QUESTION 4 IS C. ketose

Question 5 : Which of these is not a reducing sugar
A. maltose
B. sucrose
C. fructose
D. glucose

ANSWER TO QUESTION 5 IS B. sucrose

Question 6 : Glucose is found in all but one these carbohydrates
A. fructose
B. maltose
C. melibiose
D. trehalose

ANSWER TO QUESTION 6 IS A. fructose

Question 7 : All these are disaccharides except
A. sucrose
B. lactose
C. maltose
D. xylose

ANSWER TO QUESTION 7 IS D. xylose

Question 8 : Dental plaque formed by bacteria growing on the surface of teeth is rich in _______
A. glycogen
B. dextran
C. glucose
D. chitin

ANSWER TO QUESTION 8 IS B. dextran

Question 9 : Carbohydrates are important in all but one of these processes
A. repair of worn out tissues
B. formation of DNA
C. structral support
D. energy transport

ANSWER TO QUESTION 9 IS D. energy transport

Question 10 : Simple sugars with six carbons are called _______
A. hexoses
B. maltose
C. tetrose
D. pentoses

ANSWER TO QUESTION 10 IS A. hexoses