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mamaluj [8]
2 years ago
15

After taking antibiotics for several weeks, a patient develops a severe bacterial infection in his intestines. The doctor claims

the antibiotics changed the microbiome of the patient’s gut, causing the infection to develop. What evidence would the doctor need to support the claim? Explain how competition and succession played a role in developing the bacterial infection.
Biology
2 answers:
Leokris [45]2 years ago
5 0

Answer:

Before the antibiotic, the ‘good’ bacteria had colonized her intestines and formed colonies that made up her biome. These colonies out-compete other bacteria, including ‘bad’ bacteria that tried to grow in the intestines hence protecting her intestines from infection.

However, the antibiotics wiped out the established colonies of ‘good’ bacteria –destroying her biome- and gave room for recolonization of the intestines by bacteria. The secondary succession gave a chance for the ‘bad’ bacteria to also thrive and cause her massive infections.

Yanka [14]2 years ago
4 0

Our intestines have a beneficial bacterial flora, that is, the bacteria present there do not affect our organism, but they do audit us in some functions. However, when a person has bacterial infection in the intestine, it means that that person has had their body invaded by harmful bacteria that are causing their illness. At this point, all of these bacteria begin to compete for space and food and many of them end up dying in the process.

However, when the patient takes antibiotics to end the infection, these drugs end up killing most of these bacteria, even the beneficial ones, leaving the intestine unbalanced and susceptible to bacteria resistant to this antibiotic.

Resistance happens, because some of these bacteria may not have been exposed correctly or environment, or have been exposed to a non-lethal dose, or have suffered some kind of mutation that makes them resist the drug. In this, the current natural selection, allowing non-resistant bacteria to die, while resistant ones survive and generate other resistant bacteria, creating a flora that is not attacked by the antibiotic.

If the harmful bacteria survive they will create a whole community of harmful bacteria that will cause an even more serious infection.

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Amylase is an enzyme that converts carbohydrate polymers into monomers. Glycogen synthase is one of the enzymes involved in conv
ollegr [7]

Answer:

This question is incomplete; the complete part is:

Which of the following best explains the reactions of these enzymes?

A) Amylase aids in the removal of a water molecule to break covalent bonds whereas glycogen synthase aids in the addition of a water molecule to form covalent bonds.

B) Amylase aids in the addition of a water molecule to break covalent bonds whereas glycogen synthase aids in the removal of a water molecule to form covalent bonds.

C) Amylase aids in the addition of a water molecule to form covalent bonds whereas glycogen synthase aids in the removal of a water molecule to break covalent bonds.

D) Amylase aids in the removal of a water molecule to form covalent bonds whereas glycogen synthase aids in the addition of a water molecule to break covalent bonds.

The answer is A

Explanation:

In nature, MONOMERS are simpler units that come together to form larger units called POLYMERS. According to this question, Amylase converts carbohydrate polymers to monomers while Glycogen synthase converts carbohydrate monomers to polymers.

Monomers of carbohydrate are joined together by adding water molecule to form covalent bonds between the monomer units, hence, forming a POLYMER. This is how Glycogen synthase catalyzes its reaction of forming carbohydrate polymer (glycogen).

On the other hand, Amylase breaks down large polymer molecules into monomers by removing water molecules in a process called HYDROLYSIS. This breaks the covalent bond that holds the monomeric units together.

3 0
2 years ago
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The earth initial atmosphere in its early form was too reducing and it was made up entirely of gases such as carbon monoxide, ammonia, methane, nitrogen and other gases.

This atmosphere did not have free oxygen, since it was the result of the mixture of metals, hydrogen and other chemical elements.

The high temperatures, ultraviolet rays and electrical discharges in the early atmosphere would have caused chemical reactions of the elements to form primitive organic molecules.

Meteorites are fragments of solid matter that contain a record of the chemical substances that existed in the early Solar System.

The most predominant gases still found in the space are hydrogen and helium.

Therefore, we can conclude that hydrogen and the presence of inorganic molecules are the initial elements that make up the Earth's early atmosphere and that they are conditions that are present in the space and so in the formation of meteorites.

Learn more about Earth's early atmosphere here: brainly.com/question/18289168

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Aneli [31]

Answer: a. Genetic recombination (crossing over)

b. Can also be explained in terms of crossing over

c. Non disjunction of homologous chromosomes in meiosis 1

Explanation:

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