29) What is the backbone of DNA double helix? A) Base pairings B) Sugar bonds C)

ID: 872601 • Letter: 2

Question

29) What is the backbone of DNA double helix?

A) Base pairings

B) Sugar bonds

C) Alternating deoxyribose and phosphate

D) Alternating ribose and phosphate

30) How does cAMP function as a second messenger?

A) cAMP binds to G-protein coupled receptor and activate cAMP dependent protein kinase A.

B) cAMP binds to G-protein coupled receptor and release active catalytic subunits to phosphorylate substrate proteins.

C) cAMP binds to regulatory subunits of cAMP dependent protein kinase A and phosphorylates substrate proteins.

D) cAMP binds to regulatory subunits of cAMP dependent protein kinase A and release catalytic subunits to phosphorylate substrate proteins.

31) During well-fed state, how lipid is metabolized?

A) Excess fatty acids go to brain for oxidative phosphorylation.

B) Dietary fatty acids are incorporated into chylomicrons.

C) Most of fatty acids from diet are incorporated in VLDL.

D) Excess fatty acids from diet is incorporated into HDL

29. Ans -C

30.Ans - C

31. Ans -B

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