Papillomaviruses are transmitted by (aerosols/direct contact/secretions)

What will be an ideal response?


direct contact

Biology & Microbiology

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An artificial pacemaker supplements the actions of

a. sympathetic neurons. b. the atrioventricular node. c. the medulla oblongata. d. the sinoatrial node. e. the heart muscle itself

Biology & Microbiology

Which of the following ideas was most commonly held in the eighteenth century?

A. the fixity of species B. genetic change through mutation C. changes in a species through adaptation to the environment D. evolution by natural selection over time

Biology & Microbiology

Fertilization produces 

A. eggs. B. zygotes. C. haploid cells. D. gametes.

Biology & Microbiology

Which of the following is NOT true about

cyanobacteria? a. Cyanobacteria have the same light-capturing chlorophylls as plants. b. Chloroplasts evolved from ancient cyanobacteria. c. Cyanobacteria can fix carbon. d. Cyanobacteria can fix nitrogen. e. Cyanobacteria put nearly all of the nitrogen into Earth’s atmosphere.

Biology & Microbiology