The most common infectious disease in humans is ________.

A. dental caries
B. diarrhea
C. pharyngitis
D. the common cold
E. gastritis


Answer: A

Biology & Microbiology

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Approximately 3.5 million years ago the Isthmus of Panama formed. This new landmass severed the connection between the Pacific Ocean and the Caribbean Sea. An ancestral fish population (porkfish) was split in two by this event; the two populations no longer interbreed and are two distinct species. This type of speciation is called

A. allopatric speciation. B. parapatric speciation. C. hybridization. D. sympatric speciation. E. sexual selection due to ecological variation.

Biology & Microbiology

List the general genetic requirements and guidelines for gene therapy

What will be an ideal response?

Biology & Microbiology

A scientist cultures the dried soup from a 4,000-year-old cooking pot found in an Egyptian tomb and obtains a distinctive species of prokaryote. She immerses a test tube of these bacteria in boiling water for several hours, but the colony grows back

This species is probably A) halophilic. B) endospore-forming. C) a spirochete. D) a cyanobacteria.

Biology & Microbiology

When water molecules "stick"to something that is not another water molecule, this is called

A. adhesion. B. water pressure. C. cohesion. D. root pressure. E. pneumatophores.

Biology & Microbiology