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Semenov [28]
3 years ago
12

An action potential is necessary for a nerve impulse to occur. True or false?

Biology
1 answer:
Arisa [49]3 years ago
5 0
True i guess because well idk..truu
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A recessive trait is expressed only in an individual who is
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The correct answer is B - homozygous
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When adult amphibian skin harbors populations of the bacterium, Janthinobacterium lividum (Jl), chytrid infection seems to be in
ira [324]

Answer:

C: Take infected amphibians and assign them to two populations. Leave one population alone; inoculate the other with Jl. Measure the rate at which infection proceeds in both populations.

Explanation:

In scientific investigations, the best way to determine the effect of certain experimental factor on the population of study is to have a baseline for comparison. This is usually referred to as controlled experiment.

<em>In the case of the observation that chytrid infection in amphibians seems to be inhibited by Janthinobacterium lividum, the best way experimental design is to get a population of amphibians suffering from the disease, divide them into two groups and subject them to the same conditions except the introduction of Janthinobacterium lividum to the skin of one of the groups.</em>

<em>A suitable method can thereafter be employed to measure the rate at which infection proceeds in both population. If indeed, the bacterium has the capacity to inhibit the infection, the rate of infection in the group with the bacterium will be significantly less than that of the group without the bacterium. </em>

The correct option is C.

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Nobel, who has terminal cancer, has been in a depressed state for several weeks. the most effectve way to help him move out of t
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Smallest unit of matter
Anton [14]

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The smallest unit of matter is an atom.

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