CBSE
Multiple Choice QuestionsWhich one of the following is an incorrect combination
Adenine, thymine, cytidine
Adenine, cytosine, thymine
Guanine, thymine, uracil
Cytosine, uracil, guanine
Assertion : Carbohydrates are more suitable for the production of energy in the body than proteins and fats.
Reason : Carbohydrates can be stored in the tissues as glycogen and can be used for the production of energy, whenever necessary.
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: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.
Reason: Secondary metabolites can be commercially produced by using tissue culture technique.
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.
Which of the following are a group of micronutrients for plants
Fe, Mn, Cu, Mo, Zn
Fe, Mn, Cu, O, C
Cu, B, Cl, Fe, Ca
Ca, Mg, Fe
Which one of the following vitamins is antihaemorrhagic
Vitamin B12
Vitamin C
Vitamin B5
Vitamin K
Which is a typical example of 'feedback inhibition'?
Allosteric inhibition of hexokinase by glucose-6-phosphate
Reaction between succinic dehydrogenase and succinic acid
Cyanide and cytochrome reaction
Sulpha drugs and folic acid synthesizer bacteria
Identify the given structure
Adenylic acid
Uracil
Cholesterol
Adenosine
A nucleoside is
base + sugar
base + phosphate
sugar+ phosphate
base + sugar+ phosphate
Assertion: Deficiency symptoms of N, K and Mg are first visible in the senescent leaves.
Reason: Biomolecules containing these elements are broken down in the older leaves, making these elements available for mobilising to younger leaves.
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.
From the following groups, select the one which has only secondary metabolites?
Arbrin, cellulose, arginine, tyrosine
Glycine, gums, serine, diterpenes
Carotenoids, phenylalanine, curcumin, rubber
Conclavin-A, morphine, codeine, vinblastin
