Approximately ________ percent of all lung cancers can be traced to smoking
A) 60 B) 70 C) 90 D) 80
D
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Malaria is caused by which of the following types of infections?
A) Protozoan B) Bacterial C) Fungal D) Viral
The process that uses hydrostatic pressure to move water and solutes through a membrane is:
a. osmosis b. dialysis c. filtration d. pinocytosis
Electrolytes are best defined as _____
a. chemicals that form ions in solution and conduct electricity b. chemicals that generate electricity c. compounds that form molecules without electrons d. salts that exchange covalent electrons e. salts that increase pH levels
Which of the following medications serves as a positive treatment by interfering with the removal of calcium ions from the sarcoplasm of cardiac muscle cells?
a. verapamil b. acetylcholine c. beta blockers d. digitalis