BioChemistry lab

A type of monosaccharide is
Glucose
Lactose
Glycogen
Glucose has a
Aldose group
Ketone group
Fructose is a
Polyhydroxy ketone
Polyhydroxy aldehyde
Tetrose contains
3 carbons
4 carbons
6 carbons
Number of carbohydrate isomers is equal to
Number of chiral carbons "n"
2^n
Proteins are made of
H
COOH
OH
NH2
The side chain "R" of the protein tells us whether its acidic or basic
True
False
Maltose is a polysaccharide
True
False
Optical activity classifies the polymers into
D&L
Epimers
Anomers
Ninhydrin test tests for
Protein
Amino acids
Both
Ninhydrin gives ........ When glycine is present
Yellow
Purple
No change
Ninhydrin gives yellow when ....... Is present
Hydroproline
Arginine
Cysteine
Ninhydrin reagent reacts with.........in the protein
NH2
Side chain
Amino acid
COOH
Amino acids are
Basic
Acidic
Can be both
Biurite test changes if the sample is
Protein
Amino acid
Both
Biurite reagent needs a
Basic media
Acidic media
Biurite reagent is
CuSo4
NaOH
Br2
Proteins have ....... Bonds between them
Peptide
Glycocidic
Covalent
Sakaguchi is a test for
Arginine
Tyrosine
Cysteine
Sakaguchi is positive when it turns
Yellow
Violet
Red
Sakaguchi reagent is
Alpha naphthol
Formalin
Glyoxal
Nitroprusside tests for
Arginine
Tyrosine
Cysteine
Sodium Nitroprusside reacts with..........in the protein giving a redish purple colour
Sulfhydryl group
Amino group
NH2
Millon's test tests for tryptophan
True
False
Millon's reagent is
HNO3
HgSo4
Formalin
Millon's test gives positive when it turns red
True
False
Cole - Hopkins test is for
Tyrosine
Tryptophan
Cysteine
Cole's test reagent reacts with
indole group
Amino group
Phenol group
Hopkins cole test reagent is glyoxylic acid
True
False
Lipids exist in the structure of the cell membrane
True
False
Proteins are responsible for the the regulation of steroid hormones
True
False
Lipids are intracellular modulators
True
False
Lipids are the main source of energy
True
False
Saturated fats have double bonds
True
False
Simple form lipids contain
Alcohol and fatty acids
Part lipid and part non lipid
Conjugated form lipids contain
Alcohol and fatty acids
Part lipid and part non lipid
Hydrogenation converts saturated lipid to unsaturated
True
False
Salkowski test is for
Cholestrol
Protein
Carbs
Lipids
Salkowski test turns
Violet
Red
Purple
We use ..........to extract cholesterol
Chloroform
H2So4
Salkowski
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