CBSE
Multiple Choice QuestionsAssertion : Activity of an enzyme is pH-dependent.
Reason : Change in pH affects the solubility of the enzyme in water.
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.
There are 20 naturally occurring amino acids. The maximum number of tripeptides that can be obtained is :
8000
6470
7465
5360
The digestion of fat in intestines is aided by
emulsification
peptisation
protection
diffusion
Enzymes are
fatty acids
oils
minerals
proteins
Cellulose has very high degree of hydrophilicity because of :
its amorphous nature
crystalline nature
presence of excessive voids in solid state
presence of many hydroxyl groups on the polymer back bone
Which of the following biomolecules contain non-transition metal ion ?
Vitamin B12
Chlorophyll
Haemoglobin
Insulin
Assertion : Nucleotides are phosphate esters ofnucleosides.
Reason : The various nucleotides in nucleic acids are linked either through purine or pyrimidine bases.
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
An example ofa sulphur containing amino acid is :
lysine
serine
cysteine
tyrosine
Which of the following is not present in a nucleotide ?
Cytosine
Guanine
Adenine
Tyrosine
The true statement regarding sucralose is:
trichloro derivative of sucrose
it does not provide calories
it is stable at cooking temperature
All of the above
