Biology, 28.07.2019 03:00 fernandezvela27
Females of the species drosophila pseudoobscura respond less well to the courtship signals from males of their close relative drosophila persimilis than they do to those of males of their own species. this is an example of [a] gametic isolation. [b] hybrid infertility. [c] behavioral isolation. [d] adaptive radiation. [e] sympatric speciation.
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Biology, 22.06.2019 01:00
Nucleic acid certain protein cell membranes certain carbohydrates
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Biology, 22.06.2019 02:30
The idea that all living things are made up of cells is considered scientific law. this means the idea is an emerging scientific idea that has a logical explanation. has been tested with similar results at least twice. is supported by scientific consensus and a large amount of evidence. has been rejected only once by the scientific community
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Biology, 22.06.2019 06:50
The kidney filters potentially toxic substances in the blood, and thus βclearsβ the blood of those substances. this clearance function is dependent upon and proportional to the diffusion gradient of the substance across filtering capillaries, i.e. if the concentration of the substance is doubled, twice as much will be cleared from each ml of blood that is filtered. suppose that the body produces a constant amount of a substance x per unit of time. the kidneys eliminate substance x at a rate directly proportional to the concentration of the substance and the volume of blood cleared each minute (c): elimination = c Γ [x], where [x] is the steady-state concentration of substance x. imagine an individual with an initial concentration of x equal to [x]0 who develops kidney disease. her baseline clearance c0 drops to one half of the original (Β½c0). what is the new steady state concentration of x? (for simplicity, assume that substance x is 100% filtered by the kidney).
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Biology, 22.06.2019 11:00
Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?
Answers: 2
Females of the species drosophila pseudoobscura respond less well to the courtship signals from male...
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