Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

biochem lab > monosaccharides and disaccharides > Flashcards

monosaccharides and disaccharides Flashcards

1
Q

what is the general formula for carbohydrates

A

Cn(H2O)n

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

also known as saccharides and carbs

A

carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

a biomilecule consist of C, H, and O

A

carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

major food source and key from of energy for most organisms

A

carbohydrates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

simplet carbohydrates ; 1 sugar unit

A

monosaccharides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

contain only a signle or ketone functional group

A

monosaccharides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

properties if a monosaccharides

A

colorless, crystalline, and sweet taste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what are the three test soution use in the experiment

A

glucose
lactos
sucrose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

it is also called dextrose and the most abundant organic compound in nature

A

glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

glucose formula

A

C6H12O6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

in medicine, glucose is often called

A

blood sugar

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the common component found in polysaccharides such as cellulose, starch, and glycogen?

A

glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the most important disaccharides

A

sucrose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

table sugar

A

sucrose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

monosaccharides unit of maltose

A

glucose + glucose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

monosaccharides unit of sucrose

A

glucose + fructose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

monosaccharides unit of lactose

A

glucose + galactose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

its properties are non crystalline and water insoluble

A

polysaccharides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

general test for carbohydrates

A

molisch test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

solution of alpha-naphthol in 95%
ethanol

A

molisch test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

purple color ring develops at the interface if a CHO is present

A

molisch test

22
Q

positive result purple/magenta

A

schiffs test

23
Q

general test for the presence of aldehydes functional group

A

schiffs test

24
Q

pararosanilin with sulfurous acid

A

schiffs test

25
Q

3 oxidizing agent

A

tollen, fehlin, benedict test

26
Q

when an aldehyde end of glucose is oxidized what is produce

A

gluconic acid

27
Q

oxidation of aldehyde end of galactose produces

A

galactonic cid

28
Q

the aldehyde group of an aldose is oxidized under basic conditions to a carboxylate anion

A

oxidation to aldonic acid

29
Q

reaction with methyl alcohol forming acetals and ketals

A

glycoside formation

30
Q

aka silver mirror test

A

tollen test

31
Q

formation of silver mirror

A

tollens test

32
Q

silver nitrate in water

A

tollen test

33
Q

oxidizing agent is cupper sulfate (CuSO4)

A

fehling test

34
Q

hydrated CuSO4

A

fehlings A

35
Q

rochelle salt in NaOH

A

fehlings b

36
Q

formation of brick red precipitate

A

fehlings test

37
Q

orange solution

A

benedicts test

38
Q

oxidizing agents is cuprous sulfate (CuSO4)

A

benedicts test

39
Q

light yello/ yellow

A

nylanders

40
Q

bismuth subnitrate, KOH

A

nylanders

41
Q

picric acid

A

picric acid test

42
Q

mahogany red solution

A

picric acid

43
Q

formation of dark brown solution/ caramel

A

moores tet

44
Q

strong NaOH

A

moores test

45
Q

non-reducing sugar

A

sucrose

46
Q

Which of the following is a characteristic of reducing sugars?
A) They do not react with Benedict’s reagent.
B) They contain a ketone or aldehyde group.
C) They are always sweet in taste.
D) They are primarily found in fats.

A

B

47
Q

What chemical test is commonly used to detect the presence of reducing sugars?
A) Fehling’s test
B) Iodine test
C) pH test
D) Grignard test

A

A

48
Q

When a reducing sugar reacts with Benedict’s solution, what color change indicates a positive result?

a) Blue to orange
b) Red to green
c) Yellow to purple
d) Clear to cloudy

A

a

49
Q

In the picric acid test, what color change indicates the presence of reducing sugars?

A

yellow to red

50
Q

What color change is observed in the Tollen’s test when a reducing sugar is present?

A

silver mirror

51
Q

Which chemical test is commonly used to detect reducing sugars in a solution using a blue solution that changes to a brick-red precipitate?

A

fehlings test

52
Q

chemical name for picric acid

A

2, 4, 6 trinitrophenol

biochem lab (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions