Group 1 aquatic macroinvertebrates

(a) require high-quality, unpolluted water.
(b) require polluted water.
(c) are tolerant of a wide range of water quality conditions.
(d) include leeches.


(a) require high-quality, unpolluted water.

Biology & Microbiology

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A new operon is discovered in a bacterium. The control of this operon is affected by a protein that is

made by another gene, and is made in an active form that binds to the DNA near the operon to prevent transcription. This is an example of __________ control. a. positive b. negative c. activational d. repressing e. inducing

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What is the function of RNA interference?

What will be an ideal response?

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What is the most likely consequence of a mutation that causes sporopollenin to degrade quickly after it is synthesized?

A. a decrease in the number of sperm that can be produced B. a reduction in the ability of pollinators to detect and transfer pollen grains to a stigma C. a decrease in the ability of the pollen grain or spore to open when a suitable location is found D. a reduction in the ability of the integument of an ovule to develop into a seed coat E. a reduction in the ability of pollen and spores to disperse to new areas

Biology & Microbiology