Advanced Placement (AP) College

The introduction of the antibiotic methicillin was once successful in destroying Staphylococcus bacterial infections. More recently, strains of Staphylococcus bacteria have undergone mutations that cause the bacteria to be resistant to the action of methicillin, leading to increased incidence of the disease MRSA (methicillin-resistant Staphylococcus aureus).

How would the proportion of bacteria carrying this mutation change in the population over time in populations treated with methicillin?

The number of mutated bacteria would increase because the mutated bacteria would outcompete the non-mutated bacteria for resources.
The number of mutated bacteria would decrease because the non-mutated bacteria would outcompete the mutated bacteria for resources.
The number of mutated bacteria would decrease because the non-mutated bacteria would be selected for over time through natural selection.
The number of mutated bacteria would increase because the mutated bacteria are more successful and are able to reproduce more bacteria with the same mutation.

Answers

Answer 1

lThe number of mutated bacteria would increase because the mutated bacteria are more successful and are able to reproduce more bacteria with the same mutation.

How to explain the information

This is because methicillin selectively kills non-mutated bacteria, leaving behind the mutated bacteria to reproduce and pass on their resistance to future generations.

Over time, this would result in an increased proportion of bacteria carrying the mutation in the population, leading to a higher incidence of MRSA. This process is an example of natural selection, where the mutation that confers resistance to methicillin provides a selective advantage in an environment where the antibiotic is present.

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Related Questions

The personal identification number that students need to apply for federal student aid is also called a: OA. PASSWORD. O B. PIN. O C. CODE. O D. 4caster. SUBMIT​

Answers

The personal identification number that students need to apply for federal student aid is also called a PIN

What is the personal identification number?

The PIN (Personal Identification Number) is a singular identifier namely used by juniors and their parents to authorize general student aid, in the way that grants, loans, and work-study programs. The PIN serves as a digital sign and helps to ensure the protection and accuracy of undergraduate facts during the request process.

The PIN is used to access miscellaneous federal undergraduate aid websites, such as the Free Application for Federal Student Aid (FAFSA) site, and is necessary to electronically sign the FAFSA.

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An advertising executive thinks that the proportion of consumers who have seen his company advertisement in newspaper is around 0.65. The executive want to estimate the customer proportion to within ± 0.05 and have a 98% confidence in the estimate. How large a sample should be taken?

Answers


An advertising executive thinks that the proportion of consumers who have seen his company advertisement in newspaper is around 0.65. The executive want to estimate the customer proportion to within ‡ 0.05 and have a 98% confidence in the estimate. How large a sample should be taken?

A person weighs 833.0N on the surface of Planet X. Plant Y is 2 times the mass and 4 times the radius of Planet X. Calculate the weight of the person on Planet Y.

Answers

Answer: The person will weight approx. 625 N.

Explanation: in the attachment :3

provide one specific example of when you might incorporate a source in your writing for work or school. Then in 2-3 sentences explain the value of incorporating sources into your writing

Answers

One specific example of when you might incorporate a source in your writing for work or school is when you are writing a research paper. In a research paper, you are expected to use sources to support your claims and arguments. By incorporating sources, you can show your readers that you have done your research and that your claims are based on evidence. This can help to make your writing more credible and persuasive.

Here is an example of how you might incorporate a source in your writing:

According to a study by the Pew Research Center, "the number of Americans who say they are willing to pay more for products that are made in the United States has increased in recent years." (Pew Research Center, 2017)

This quote from the Pew Research Center study provides evidence to support the claim that there is a growing demand for American-made products. By incorporating this source, you can show your readers that your claim is based on research and that it is not just your own opinion.

In addition to making your writing more credible, incorporating sources can also help you to learn more about your topic. When you read other sources, you are exposed to new ideas and perspectives. This can help you to develop a deeper understanding of your topic and to write a more comprehensive paper.

Overall, incorporating sources is an important part of writing for work or school. By incorporating sources, you can make your writing more credible, persuasive, and informative.

Incorporating sources into your writing adds value by enhancing the quality and reliability of your work.

One specific example of when you might incorporate a source in your writing for work or school is when you are writing a research paper on a specific topic. In this case, you would include sources such as academic journals, books, or reputable websites to support your arguments, provide evidence, and give credibility to your work.

Incorporating sources into your writing adds value by enhancing the quality and reliability of your work. It demonstrates that you have conducted thorough research, considered different perspectives, and built your arguments on a foundation of existing knowledge. By citing credible sources, you also acknowledge the contributions of others and give readers the opportunity to explore the topic further.

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Sodium 24 has a half-life of approximately 15 hours. Consider a sample of 100 milligrams.

Write an equation to determine the number of milligrams remaining after t days. Show all work.
How many milligrams are remaining after 45 hours? Show all work.
How long will it be until there are 5 milligrams remaining? Show all work.

Answers

The decay equation is: N(t) = [tex]N0 * (1/2)^(t/T),[/tex] where N0 is the initial amount, T is the half-life, and t is time.

How to find the milligrams are remaining after 45 hours

For 45 hours, t = 45/24 = 1.875 days.

Plug values into the equation:

N(1.875) = [tex]100 * (1/2)^(1.875/0.625)[/tex]

= [tex]100 * (1/2)^3[/tex] = 12.5 milligrams.

To find when there are 5 milligrams left,

5 = [tex]100 * (1/2)^(t/0.625).[/tex]

Solving for t: t = 0.625 * log2(100/5)

= 0.625 * 4.322 = 2.70 days.

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Technician A says that one function of a damage report is to help prevent misunderstandings between the repairer and customer.

Technician B says that one function of a damage report is to document authorization to repair the vehicle.
Who is right?

Answers

Answer: both a and b

Explanation:

Compare Traditional, Command, Market and Mixed Economies; What are each systems advantages and disadvantages

Answers

Traditional Economy:
Advantages:

Preservation of cultural and societal traditions.
Strong sense of community and social cohesion.
Sustainable use of resources.
Disadvantages:

Limited economic growth and innovation.
Lack of individual freedom and limited opportunities for social mobility.
Vulnerability to external shocks and changes in the environment.
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