Which of these are considered most essential in the origin of life?

• Enzymes

• Nucleic acids

• Carbohydrates

• Proteins

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

Which of the following is not a co-enzyme?

• NAD

• NADP

• FAD

• ATP

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.

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

Which of the following would not give Fehling's test ?

• Glucose

• Sucrose

• Fructose

• Lactose

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.

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.

Coenzymes NAD and NADP contain the vitamins

• Niacin

• Biotin

• Thiamine

• Vitamin B₁₂

• Vitamin B₁₂