Which of these are considered most essential in the origin of life?
Enzymes
Nucleic acids
Carbohydrates
Proteins
Assertion : Histamine is involved in allergic and inflammatory reactions.
Reason : Histamine is a vasodilator.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both the assertion and reason are false.
Assertion : Wounds heal slowly due to vitamin C deficiency.
Reason : Vitamin C is essential for collagen formation
If both Assertion and Reason are true and Reason is the correct explantion of Assertion
If both Assertion and Reason are true and Reason is not the correct explanation of Assertion
If Assertion is true but Reason is false
If Assertion is false but Reason is true.
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
An example of competitive inhibition of an enzyme is the inhibition of:
succinic dehydrogenase by malonic acid
cytochrome oxidase by cyanide
hexokinase by glucose-6-phosphate
carbonic anhydrase by carbon dioxide
The vitamin nicotinamicle can be synthesized in our body from
tyrosine
tryptophan
valine
phenylalanine
Continuous bleeding from an injured part of body is due to deficiency of :
Vitamin A
Vitamin B
Vitamin K
Vitamin E