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NeTakaya
3 years ago
11

Did alleles for drug resistance occur in bacterial populations that afflict humans

Biology
1 answer:
Cerrena [4.2K]3 years ago
4 0

Answer:

Did alleles for drug resistance occur in bacterial populations that afflict humans, prior to the widespread use of antibiotics in medicine and agriculture? a. No—mutations for drug resistance occur in response to antibiotic use. ... Yes—alleles for resistance arise due to random mutation, so are always present.

Explanation:

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1. People with diabetes tend to suffer from extreme thirst and frequent urination. These symptoms are signs that the body is not
jolli1 [7]

Answer:

The bloodstream carries glucose a type of sugar produced from the digestion of carbohydrates and other foods-to provide energy to cells throughout the body

Explanation:

6 0
3 years ago
What evidence supports the claim that the earth has layers?
andrew11 [14]

Answer:

There are many ways scientists can gather evidence to learn about Earth's interior including direct evidence from rock samples and indirect evidence from seismic waves.

also

1. Seismic waves and earthquakes

2. Volcanoes

3. Principles of density

​4. Earth is magnetic

Explanation:

5 0
3 years ago
If C-1 of glucose is radiolabeled and the glucose then enters glycolysis, what percentage of the pyruvate molecules will carry t
Talja [164]

Answer:

50%

Explanation:

Glucose is a simple sugar with a total of 6 carbon atoms in its structure. Pyruvate has a total of three carbon atoms. Two molecules of pyruvate are obtained per glucose by glycolysis.  None of the carbon of glucose is released in the form of CO2 during glycolysis. Therefore, the radio-labeled C-1 of glucose will be the component of the carbon skeleton of one of the total of two pyruvate molecules produced during glycolysis. So, 50% of the pyruvate will exhibit radioactivity.

5 0
3 years ago
What type of human activities cause the elevation of atmospheric greenhouse gases
Leto [7]
The amount of greenhouse effect on Earth is directly proportional to the concentration of greenhouse gases in the atmosphere. In this era of industrialization, although it may seem that it has greatly improved the global economy, it also downplays the importance of consistently upholding our role as a steward to Earth. 

The most common types of human activities that continuously worsen the greenhouse effect are: burning of fossil fuels, agriculture, and industrial processes.

The burning of fossil fuels such as coal, oil, and gas emits carbon dioxide which accounts for approximately three-quarters of the warming impact caused by the greenhouse gas emissions. This is amplified significantly through deforestation. 

Methane, which accounts for 14 percent, and nitrous oxide, which accounts for eight percent are one of the major greenhouse gas emissions on earth. This can be sourced out from livestock and rice fields and also fossil fuel extraction and organic waste decay in landfill sites.

Industrial processes would incept fluorinated gases which accounts for one percent of the warming effect of current human greenhouse gas emissions.

Although it may seem that the values are not that high, but it must also be taken into consideration the several or a superfluous number of industries all around the world that simultaneously worsens the already groveling site of the continuously deteriorating and exploited planet Earth.
6 0
3 years ago
1. How does base pairing differ in RNA, compared to DNA?
Setler79 [48]

Answer:

A. A pairs with U

Explanation:

In DNA, the nitrogenous bases are A, T, G, and C. In RNA, the nitrogenous bases are A, U, G, and C.

A pairs with U in RNA because it requires less energy to use uracil over thymine.

Hope that helps.

8 0
3 years ago
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