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Tpy6a [65]
3 years ago
10

Ned is designing an experiment to test which hand sanitizer kills the most E. coli bacteria. In order for Ned's results to be va

lid, what must he do?
Biology
2 answers:
Kay [80]3 years ago
7 0
Have a control. You have to have something to compare your experimental results or else your results could be random chance. 

kondaur [170]3 years ago
7 0
Test the hand sanitizers on bacterial colonies that are kept in the exact same environmental conditions, such as temperature and light level
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in a well-fed state, brain cells use which one of the following compounds circulating in the blood stream almost exclusively as
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2 years ago
The ligament that attaches the lateral femoral epicondyle to the fibula is called the?
Lady_Fox [76]

Answer:

fibular collateral ligament / lateral collateral ligament (LCL)

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2 years ago
A glucose molecule is completely broken down to carbon dioxide and water in glycolysis and the citric acid cycle. True or False
lutik1710 [3]

Answer:

True

Explanation:

A glucose molecule enters glycolysis in the cytoplasm of the cell. The glycolytic reactions break down one molecule of glucose into two molecules of pyruvate. Each of the pyruvate molecules is then decarboxylated and is oxidized into acetyl CoA. Acetyl CoA enters Kreb's cycle. Acetyl CoA is completely broken down into CO2 and H2O in Kreb's cycle. In this way, glycolysis and Kreb's cycle break down the glucose molecule into CO2 and H2O in a stepwise manner.

3 0
3 years ago
Is my answer correct?
Andre45 [30]

Answer:

Yes, I think you're correct!

Explanation:

7 0
2 years ago
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Blue poppies native to China were grown at a plant-breeding center in California. The plants with the thickest leaves were most
DIA [1.3K]

Answer:

Directional selection

Explanation:

Directional selection is a type of natural selection that favors one extreme phenotype of a genetic trait due to its survival and reproductive advantage to the individuals over another extreme phenotype and the intermediate phenotype.

In the given example, the thick-leaved plants are better adapted to a drier climate due to reduced water loss. Directional selection favored the plants with thick leaves which in turn produced more progeny. Over the generations, the population evolved into the one having more number of thick-leaved plants.

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3 years ago
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