What would you call an aquatic organism’s avoidance of high concentrations of a chemical in the water?
What will be an ideal response?
Negative chemotaxis
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What does shear stress influence for bottom dwellers? a. The amount of substrate in an area
b. The food availability in an area. c. The type of sediment in an area. d. The speed of water currents.
You discover a mutant strain of Neurospora crassa that will not grow on a minimal medium but that will grow on a medium supplemented by the amino acid methionine
How can you determine which step in the methionine synthesis pathway is affected by the mutation?
Which habitats should harbor snapping shrimp species with the greatest degree of genetic divergence from each other?
A) A1 and A5 B) A1 and B5 C) A5 and B5 D) Both A1/A5 and B1/B5 should have the greatest, but equal amounts of, genetic divergence.
Only pre-synaptic neurons are coated with myelin.
a. true b. false