(a) 1.30 kg to 1.56 kg

(b) 1.44 kg to 1.66 kg

(c) 1.36 kg to 1.71 kg

(d) 1.68 kg to 1.86 kg

(a) Adrenaline

(b) Progesterone

(c) Growth factors

(d) All of the above

(a) First messenger

(b) The Second messenger

(c) Both (a) and (b)

(d) None of the above

(a) In multicellular organisms, cell communicate using hormones

(b) In unicellular organisms, cell communicate using extracellular signaling molecules

(c) In multicellular organisms, cell communicate using intracellular signaling molecules

(d) None of the above

(a) Enzyme-linked receptors

(b) G protein-linked receptors

(c) Ion-channel linked receptors

(d) All of the above

(a) G proteins are involved in signal cascades

(b) G proteins become activated when bound to GDP

(c) Guanine nucleotides regulate G proteins

(d) None of the above

(a) Proteases

(b) Nitric oxides

(c) G proteins

(d) Neurotransmitters

(a) Hormones

(b) Chemicals

(c) Cholesterol

(d) Carbohydrates

(a) Two

(b) Four

(c) Five

(d) Seven

(a) Steroids

(b) Corticoids

(c) Terpenoids

(d) Eicosanoids