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.
B.
If both the assertion and reason are true but reason is not the correct explanation of assertion.
Histamine is a derivative of the amino acid histidine produced by damaged cells of vertebrates. When released, it has the effect of dilating capillaries and lowering blood pressure. Histamine is involved in allergic and inflammatory reactions.
Starch is insoluble in water, yet it is accumulated in large quantities in potato tuber because :
it is useful for storage
tubers respire slowly
starch is synthesized in tubers
translocated sucrose is polymerized here
Continuous bleeding from an injured part of body is due to deficiency of :
Vitamin A
Vitamin B
Vitamin K
Vitamin E
The vitamin nicotinamicle can be synthesized in our body from
tyrosine
tryptophan
valine
phenylalanine
Which of the following statements regarding fats is true?
Arachidonic acid has 20 carbons excluding the carboxyl carbon.
Glycerol is a trihydroxy propane.
Palmitic acid has 18 carbons including the carboxyl carbon.
Oils have higher melting points than fats.
Oils have higher melting points than fats.
Which of these are considered most essential in the origin of life?
Enzymes
Nucleic acids
Carbohydrates
Proteins
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.
