Crystalization of a protein can be done by..?

(1)hydrochloric acid

(2)sulfuric acid

(3)ammonium sulfate

(4)water

Which of the following is an inhibitory neurotransmittor?

(1) Glutamate

(2) Acetyl choline

(3) Glycine

Pherepheral nervous system consists of..........?
(1) brain
(2) spinal cord
(3) sensory and motor neurons
(4) brain and spinal cord

Seconday conformation in antibodies ?
(1) alpha helical
(2) beta sheet
(3)linear