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Len [333]
3 years ago
11

Why was important for Miller and Urey to sterilized the apparatus to kill any bacteria in it?

Biology
1 answer:
Elena L [17]3 years ago
3 0

Answer:

The Miller–Urey experiment (or Miller experiment) was a chemical experiment that simulated the conditions thought at the time to be present on the early Earth, and tested the chemical origin of life under those conditions. The experiment supported Alexander Oparin's and J. B. S.

Explanation:

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B. An amino acid

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Which of the following is a homogeneous mixture?
diamong [38]

Explanation:

Blood

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Protists are a group of unicellular organisms that are eukaryotic. However, they are a diverse group, with some of the members o
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3 years ago
In addition to E. coli, a risk factor for development of pyelonephritis is: a. urinary retention and reflux. b. nephrotic syndro
monitta

Answer:

One of the factors for the development of pyelonephritis, in addition to E. coli, is urinary retention and reflux (option a).

Explanation:

Pyelonephritis is an infection of the upper urinary tract caused by bacteria in the urine, such as Escherichia coli.

Under normal conditions, urine in the urinary bladder is aseptic, that is, without bacteria.  The presence of bacteria in the urine indicates a urinary infection.

Urinary retention is the limitation of the expulsion of urine from the bladder. This promotes:

  • <em>An increase in the amount of bacteria present in the bladder. </em>
  • <em>The pressure generated by urine retention causes the bladder to generate a retrograde flow - reflow - towards the ureters, leading the bacteria to the kidneys. </em>

The result of urinary retention and reflux - when bacteria are present - is an infection in the upper urinary tract, called pyelonephritis.

Learn more:

Urinary tract infection brainly.com/question/4756206

5 0
3 years ago
In order to beat, the heart needs three types of cells. describe the cells and their function.
yulyashka [42]
1. Rhythm generators (SA node)
2. Conductive cells (node cells)
3. Contractile cells (myocardial cells)
4 0
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