biomolecules
5.0(3)
Studied by 30 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/19
Earn XP
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
20 Terms
1
New cards
acetic acid
(CH3COOH); carbohydrate exception; same gen formula
2
New cards
rhamnose
C6H12O5; carbohydrate. diff formula
3
New cards
sucrose
common; present in homes
4
New cards
lactose
milk
5
New cards
monosaccharides
glucose, fructose, ribose.
6
New cards
sucrose(hydrolysis)
glucose+fructose
7
New cards
maltose(hydrolysis)
glucose+glucose
8
New cards
polysaccharides
starch, cellulose, glycogen, gums, etc.
9
New cards
non sugars
polysaccharrides, not sweet
10
New cards
fact about monosaccharides
reducing
11
New cards
condition for reucing sugar: disac
free aldehydic or ketonic group; maltose or lactose
12
New cards
non reducing disac
sucrose
13
New cards
prep of glucose (i)
from sucrose; boiling; h2so4 or dil HCl; gives glucose+fructose
14
New cards
commercial method
obtained by hydrolysis of starch OR cellulose by boiling it with dilute H2SO4 at 393 K under pressure 2-3 atm.
15
New cards
aldohexose
dextrose; glucose
16
New cards
structure; heating
On prolonged heating with HI, it forms n-hexane, suggesting that all the six carbon atoms are linked in a straight chain.
17
New cards
Cyclic Structure of Glucose
Schiffs test; NaHSO3
18
New cards
cyclic structure
The pentaacetate of glucose does not react with hydroxylamine indicating the absence of free —CHO group.
19
New cards
alpha glucose
The α-form of glucose (m.p. 419 K) is obtained by crystallisation from concentrated solution of glucose at 303 K
20
New cards
beta glucose
(m.p. 423 K) is obtained by crystallisation from hot and saturated aqueous solution at 371 K.