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Vlad [161]
3 years ago
15

1.

Biology
1 answer:
ella [17]3 years ago
8 0
B water pollution is the answer
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A negative control is a sample that you know will give you a negative result. You are testing for the presence of proteins, redu
lbvjy [14]

Answer:

Starch and water will be the best negative control

Explanation:

Negative control sample is a sample that will not give change in an experiment.

Starch and water will be the best negative control. This is because, starch is broken down by HCl to monosaccharides in the Benedict test which is the test for reducing sugar

Distilled water remain a negative control because it remain blue which means it does not reduce sugar with starch solution.

Water plus us a negative control for Buiret test (protein) and Benedict(reducing sugar) because it does not indicate the presence of protein and reducing sugar.

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Read the following selection from "A Retrieved Reformation" and answer the question that follows:
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The answer is the last one: He will go back to his criminal ways.
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What feature makes water a polar molecule? A. A water molecule is negatively charged. B.The middle of the water molecule contain
Aliun [14]

The ends of the water molecule have opposite electrical charges.

100% correct

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In which direction in air pressure exerted
ZanzabumX [31]

air pressure is usually exerted counterclockwise

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Cells responsible for information processing and transfer are
Darya [45]

Answer: C). Neurons

Explanation:

Neurons are the specialized cells present in the brain. These cells play an important role in processing and transfer of information generated as a response to stimuli. The neurons have specialized parts which recieves the signals from dendrites and send the signal to other neuron by axon. In this way transfer of information takes place from cell to cell.

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