Which type of hemolysis results in a green halo around colonies?

A) Alpha hemolysis
B) Beta hemolysis


A) Alpha hemolysis

Biology & Microbiology

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The first plant to colonize the plains of Mount Saint Helens after this volcano erupted in 1980 was a prairie lupine

The prairie lupine is therefore an example of ____.

a. a secondary successor b. a pioneer species c. a keystone species d. an exotic species e. an introduced species

Biology & Microbiology

Which of the following has the largest genome and the fewest genes per million base pairs?

a) Homo sapiens (human) b) Haemophilus influenzae (bacterium) c) Drosophila melanogaster (fruit fly) d) Arabidopsis thaliana (plant) e) Saccharomyces cerevisiae (yeast)

Biology & Microbiology

________ appears to have been the first hominin to use stone tools

A) Homo erectus B) Homo habilis C) Ardipithecus D) Australopithecus

Biology & Microbiology

Which organs are particularly susceptible to damage by certain antimicrobial drugs?

A) brain and spleen B) kidneys and liver C) pancreas and gallbladder D) heart and lungs E) stomach and intestines

Biology & Microbiology