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hodyreva [135]
3 years ago
7

Difference between control sample and a standard

Health
1 answer:
mash [69]3 years ago
4 0

 A standard contains a known amount of a substance. If u are performing an experiment you will use a sample with a known concentration to create a standard curve (a straight line). Positive and negative controls are measured against the standard curve to show the expected results if the sample u will be testing is positive or negative.

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1.)The blood entering the right side of the body contains (oxygenated / un-
ivann1987 [24]

Answer:

1. The blood entering the right side of the body contains <u>un- oxygenated</u> blood (B).

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3. What structure brings blood to the right atrium?  Superior and inferior vena cava (D).

Explanation:

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