Will is a graduate student working in a microbiology lab. He is given the task of characterizing a newly discovered nitrogen fixing bacterium. What type of tests or observations will help him determine whether it is a member of the Cyanobacteria,
alphaproteobacteria, or gammaproteobacteria?
What will be an ideal response?
If the bacteria are coccus or disc-shaped, and carry out photosynthesis, it is likely a member of the cyanobacteria. Bacteria that are free-living nitrogen fixers are probably gammaproteobacteria. If the bacteria were found on or in the roots of plants they are probably alphaproteobacteria. Determining the sequence of the bacterium's ribosomal RNAs and comparing them to known sequences can be used to verify the assignment.
Bloom's Taxonomy: Synthesis
Section: Survey of Bacteria
Learning Outcome: 11.12, 11.25
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How are simulation results useful for informing decisions about the real world?
A. Because simulation models precisely replicate real-world biology, the results they produce accurately predict everything that will happen in the real world. B. Because simulation models capture the essential features of real-world biology, the results they produce always accurately predict basic outcomes in the real world. C. Because simulation models capture key features of real-world biology, the results they produce can lead to reasonable predictions and further hypotheses about the real world. D. Because simulation models are not necessarily based on real-world biology, they can generate predictions about species that aren't yet well studied in the real world.
The ____ of the eye focuses light on the eye's
photoreceptors. In the above diagram of the eye, which letter identifies it?
a. retina; C b. lens; B c. lens; A d. fovea; D e. retina; B
Four of the following are gorilla features. Which one is the exception?
a. spinal cord attached at rear of skull b. C-shaped spine c. legs longer than arms d. flat foot e. opposable big toe
Two butterflies have identical wing patterns, but in one the pigment is blue and in the other the pigment is yellow. The original ancestor had green wing pigments. The wing pigment is an example of a(n) ________
Fill in the blank(s) with correct word