Loading....
Coupon Accepted Successfully!

Biochemistry

Open Flashcards

Carbohydrates

Question
4 out of 78
 

Which is a fructosan?

 

 
A Pectin
B Chitin

 

C Inulin
D Glycogen

 

 

Ans. C Inulin

Polysaccharides serve storage and structural functions — eg.

1. Starch

a. Homopolymer of glucose, yield only glucose on Hydrolysis, known as — Glucosan or glucan

b. Formed of α-glucosidic chain

c. Two chief constituents of starch are:

i. Amylose (15-20%) has non branch helical structure

ii. Amylopectin (80-85%) branched chain carbohydrates found in cereals, potatoes legumes etc.

2. Glycogen: -

a. Storage polysaccharides of Animals also known as animal starch.

b. Highly branched chain structure.

c. Yield only glucose on hydrolysis (glucosan)

 

3. Inulin: -

a. On hydrolysis gives fructose, that is why, it is a fructosan

b. Found in Tubers, and roots of Dahlias Artichokes, and dandelions.

c. Uses for Estimation of GFR and ECF.

 

4. Dextrins Formed in the course of hydrolytic breakdown of starch.

 

5. Cellulose: -

a. Chief constituent of the frame work of plants.

b. Not digested by mammals (human) because of the absence of a hydrolase that attack the β-linkage

c. Important source of Bulk in diet.

 

6. Chitin

a. Important structural polysaccharides of invertebrates (crustaceans and insects)

b. Consists of N-Acetyl — D — glycosamine units joined by β(14) glucosidic linkages.

 

7. GAG (mucopolysaccharides):

a. consists of = carbohydrates + Amino sugar + Uronic acid

b. GAG + proteins = proteoglycans.

eg. Hyaluronic acid, chondroitin sulfate and heparin.

 

8. Pectin A purified carbohydrate obtained from peel of citrus fruit or from Apple pulp.

 

 

Carbohydrates Flashcard List

78 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)
24)
25)
26)
27)
28)
29)
30)
31)
32)
33)
34)
35)
36)
37)
38)
39)
40)
41)
42)
43)
44)
45)
46)
47)
48)
49)
50)
51)
52)
53)
54)
55)
56)
57)
58)
59)
60)
61)
62)
63)
64)
65)
66)
67)
68)
69)
70)
71)
72)
73)
74)
75)
76)
77)
78)