A promising medical development is _______________, which involves inserting normal DNA into cells to correct a genetic defect or to treat a disease

Which of the following agents reduce total peripheral resistance by a direct action on vascular smooth muscle?

a. Angiotensin blockers b. Vasodilators c. Angiotensin-converting enzyme inhibitors d. Calcium channel blockers

Charges molecules containing elements like oxygen, phosphorus, and nitrogen mix easily with water, and are called ________

A) hydrophobic B) proteins C) ions D) hydrophilic