Most protozoans exist in two forms during their life cycle. The trophozoite form is the active feeding form of the organism, while the cyst stage represents the inactive form.

A) True
B) False


A) True

Biology & Microbiology

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_____ is the physician first associated with vaccination.

a. Edward Jenner b. Louis Pasteur c. Alexander Fleming d. Robert Koch e. Joseph Lister

Biology & Microbiology

When cells differentiate they

a. lose DNA b. remain totipotent c. express a specific subset of genes d. stop growing e. gain DNA

Biology & Microbiology

Humans belong to which class of animals?

A) Bacteria B) Archaea C) Eukarya D) vertebrates

Biology & Microbiology

Explain the ecological significance of limiting resources, using three specific examples in your

discussion. What will be an ideal response?

Biology & Microbiology