CBSE
Multiple Choice QuestionsThe type of bond that is most important in maintaining secondary structure of a protein is :
disulphide bridges
hydrogen bonding within the backbone
hydrogen bonding between R group
salt bridges
Find the hydrolysis product when a phosphodiester bond of nucleotide breaks.
3-OH-deoxyribose-5-PO
5-OH-deoxyribose-3-PO
2-OH-deoxyribose-2-PO
4-OH-deoxyribose-2-PO
Find the hydrolysis product of maltose.
-D-glucose + -D-glucose
-D-glucose + -D-fructose
-D-glucose + -D-galactose
-D-fructose + -D-galactose
Assertion : -pleated sheet structure of protein shows maximum extension.
Reason : Intermolecular hydrogen bonding is present in them.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion : Fructose is a reducing sugar.
Reason : It has a ketonic group.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Glucose contains in addition to aldehyde group :
one secondary - OH and four primary - OH groups
one primary - OH and four secondary - OH groups
two primary - OH and three secondary - OH groups
three primary - OH and two secondary - OH groups
A distinctive and characteristic functional group of fats is :
a peptide group
an ester group
an alcoholic group
a ketonic group
Hydrolysis of lactose with dilute acid yields :
D - glucose + D - glucose
D - glucose + D - galactose
D - glucose + D - fructose
D - galactose + D - fructose
Proteins are :
polypeptides with low molecular weights
polypeptides with high molecular weights
polymers of amides
polymers of secondary amines
Lecithin is an example of :
carbohydrate
hormones
vitamins
phospholipid
