The earliest fossils found appear to be from the domain Bacteria. From which group of bacteria are these fossils?

a. Staphylococcus
b. nitrogen-fixing bacteria
c. cyanobacteria
d. various lactobacilli


c. cyanobacteria

Biology & Microbiology

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The process whereby naked DNA is absorbed into a bacterial cell is known as:

A) transcription. B) transduction. C) transformation. D) translation.

Biology & Microbiology

Features that are useful for identification of fungal species include

A. presence of a membrane bound nucleus. B. size, shape color and number of spores. C. ability to produce chlorophyll a. D. All of the choices are correct.

Biology & Microbiology

In addition to its white coloration, beluga whales possess another unique characteristic which is: a. the ability to forage in groups

b. the ability to bend its neck. c. the formation of a tusk d. the presence of two teeth.

Biology & Microbiology

Step 2 in the accompanying figure is accomplished by an influx of:


a. Ca2+
b. Na2+
c. K+
d. Na2+
e. K+

Biology & Microbiology