answer this biochemistry questions 1-Primary active transporters: Select one: A. Transport two substrates in the same di

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answer this biochemistry questions
1-Primary active transporters:
Select one:
A. Transport two substrates in the same direction by electrochemical-potential gradient
b. Transport the substrate by mediated diffusion
c. Transport two substrates in opposite directions by electrochemical-potential gradient
d. Require the input of metabolic energy to move the substrate
2-Activation of guanylate cyclase by nitric oxide, results in:
Select one:
he Doesnt affect smooth muscle givity
D. Smooth muscle degradation
c. Smooth muscle contraction
d. Smooth muscle relaxation
3-Which of the following ligands use cell surface receptors?Select one:A. Steroid hormonesD. Retinoic acidc. Polypeptide hormonesd. Derivatives of vitamin D3
3-Which of the following ligands use cell surface receptors?
Select one:
A. Steroid hormones
D. Retinoic acid
c. Polypeptide hormones
d. Derivatives of vitamin D3