Sidlenafil (Viagra) prolongs erection by

What will be an ideal response?


inhibiting degradation of cGMP

Biology & Microbiology

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What is the smallest unit of life?

A. An atom B. A molecule C. An organism D. A cell

Biology & Microbiology

Immunoglobulins inactivate microbes in all of the following ways except via

A. perforating the microbial cell membrane. B. binding toxins. C. linking microbes to complement proteins. D. opsonization. E. perforating membranes or binding toxins.

Biology & Microbiology

Partially acid-fast aerobic actinomycetes include:

a. Nocardia. b. Mycobacteria. c. Streptomyces. d. Actinomadura.

Biology & Microbiology

Which of the following is a population?

1.the deer (Odocoileus hemionu) living in Yosemite Valley, California 2.the deer and the grass in Yosemite valley 3.all of the organisms living in Yosemite valley 4.all of the organisms living in the Sierra Nevada mountains of California

Biology & Microbiology