The primary disease reservoir for plague is

A) fleas.
B) humans.
C) rats.
D) mosquitoes.


Answer: C

Biology & Microbiology

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Which of the following characterize the Calvin cycle?

A. Produces oxygen B. Produces glucose as an end product C. Produces carbon dioxide and water D. A process that requires light E. Nitrogen is fixed into an organic form

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A human population with an age structure diagram that is narrower at the base than at the top would

have ____.

a. zero population growth b. r < 0 c. r > 0 d. been affected by density independent factors e. (K ? N)/K < 1

Biology & Microbiology

A(n) ________ has been used to estimate that humans began to wear clothing between 83,000 and 170,000 years ago

A) parsimony analysis B) outgroup comparison C) molecular clock

Biology & Microbiology

At this point in time, scientists believe the vast majority of the domain Bacteria have been discovered

Indicate whether the statement is true or false

Biology & Microbiology