Viagra® works by dilating the arteries to the penis and other parts of the body. Why shouldn't a person use nitroglycerin at the same time that he is using Viagra®?
What will be an ideal response?
Both drugs will reduce the blood pressure (because they dilate blood vessels), and the combination may cause it to become so low that the person's heart can no longer pump sufficient blood to the vital organs.
You might also like to view...
Viruses mutate, and some viruses have not been discovered.
Answer the following statement true (T) or false (F)
The compound 2,4,5-trichlorophenoxyacetic acid is a synthetic auxin that is used as an herbicide. It is applied by spraying it on the plant
After spraying with synthetic auxin, the plant undergoes a short period of what appears to be rapid growth and then wilts and dies. Which of the following statements could explain how a synthetic auxin kills weeds? A. The herbicide causes the leaves to grow quickly. More photosynthesis occurs, but the increase in sugar production blocks phloem vessels and the plant dies. B. The plant grows so rapidly that the cellular integrity of the plant is destroyed (i.e., cell walls break down), damaging transport systems within the plant. C. Spraying the plant clogs the stomata, so photosynthesis can no longer occur. D. The synthetic auxin cannot move through PIN channels, thus destroying the natural auxin concentration gradient and inhibiting growth.
The carcinogen aflatoxin is produced by the fungus
A. Claviceps purpurea. B. Staphylococcus aureus. C. Coccidioides immitis. D. Histoplasma capsulatum. E. Aspergillus flavus.
In a molecular-evolutionary analysis, you estimate the number of base substitutions per site (K) at 0.82. Given an estimated divergence time (T) of 10 million years based on the fossil record, what is the substitution rate (r)?
What will be an ideal response?