Mansoura University
Faculty of Medicine
Medical Biochemistry Dep.
Marks :
1st assessment exam.
Student name
Section
Student number
Date
I: choose the best correct answer:
Ribulose is
1.
A) optically active aldotriose
B) optically active ketotetrose
C) optically inactive aldotriose
D) optically inactive ketotetrose
αD glucopyranose is
2.
(A) optically inactive
(B) optically active levorotatory
(C) optically active dextrorotatory
(D) non of the above
3.
Glucaric acid has
(A) one carboxylic group at its last C atom
(B) one carboxylic group at first C atom
(C) 2 carboxylic groups at both 1st and last C atoms
(D) no carboxylic groups at all .
4.
Sugar with galactosidic bond is
(A) maltose
(B) cellibiose
(C) sucrose
(D) Lactose
5.
GAG formed of repeated unit of glucuronic acid and N acetyl glucosamine is
(A) heparin sulfate
(B) chondriotin sulfate
(C) dermatan sulfate
(D) Hyaluronic acid
II. Complete with the appropriate answer:
1Amylase and amylopectin are layers of ………………………….granule
2Glycogen is the storage form of carbohydrate in ……………………..
3Pectin is composed of repeated ……………………….
4The hyluronic acid is present in …………………………..
5Carbohydrate component of glycoprotein may contain deoxysugar called
…..…………………….. .