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boyakko [2]
3 years ago
8

Which of the two tests would likely produce more false negatives with a shorter incubation time?

Biology
1 answer:
Masteriza [31]3 years ago
6 0

Answer: A short incubation time runs the risk of a false negative on the VP test, since not enough time may have elapsed to produce an adequate amount of acetoin to give a positive result. The pH change associated with mixed acid fermentation occurs fairly quickly and is less likely to be affected by shorter incubation.

b) The VP test would benefit most from a longer incubation time because it takes a while for the 2,3-butanodiol to be produced.

Explanation:

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Julie wrote down the list below of the reasons why she thinks that humans should stop relying on fossil fuels.
forsale [732]

Julie listed out fossil fuels are a non-renewable source of energy and Fossil fuels are becoming more expensive.

Option C

<h3><u>Explanation:</u></h3>

Fossil fuels are defined as the type of non renewable energy which is formed as a result of dead and decaying organic matter over thousands of years under pressure and temperature of Earth’s core.

This type of fuels are formed due to the dumping of dead prehistoric organisms like dinosaur and others under the soil under a tremendous pressure and very high temperature, where they are acted upon by bacteria and other chemicals to reduce them into petroleum and coal. These are totally non renewable and they are getting expensive over days due to shortage of availability.  

3 0
3 years ago
Which statement best describes the phase of the cell cycle shown
Sati [7]

Answer:

C

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Cell engulfs molecules in cell "drinking":
RSB [31]
These are the following answers to the items

cell engulfs molecules in cell "drinking": pinocytosis<span>

molecules helped by protein; move insoluble molecules across plasma membrane: </span>facilitated diffusion
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molecules move in and out freely from high to low concentration: </span>passive diffusion
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cell engulfs microorganisms in cell "eating": </span>phagocytosis<span>

molecules "pumped" in or out from low to high concentration: </span>active transport<span>

oxygen, carbon dioxide: </span>passive diffusion<span>

transports sodium, potassium: </span>active transport<span>

transports glucose, amino acids: </span>pinocytosis
8 0
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