"STx-producing bacteria cause over a million deaths a year, but treatment with antibiotics is not effective"

1 answer:

7 0

Answer: Despite the availability of antibiotics that lyse E coli cells, the reason this is NOT recommended in course of treatment is because the antimicrobial agents may trigger the lytic cycle and result in increased toxin expression.

Explanation:

Shiga toxin (Stx) are toxins which are produced by shiga toxin-producing Escherichia coli ( STEC). The antimicrobial agents may also trigger the lytic cycle and result in increased toxin expression.

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If deforestation has taken place, how will that affect the movement of water in the water cycle?

mariarad [96]

Deforestation impacts the water cycle by releasing water vapor back into the atmosphere.Without trees and the other vegetation needed to maintain soil integrity, forested land can quickly become a barren desert that lacks the moisture needed to maintain local lakes and rivers

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3 years ago

Which combination of items below is INCORRECT? decomposers – bacteria and fungi pioneer community – lichens and mosses commensal

Akimi4 [234]

Answer:

Option:Symbiosis in which both organisms benefit ecological niche.

Explanation:

Symbiotic association between any living organism:

The symbiotic association is the connection between any organisms, which are either benefited by each other or the relationship can be very negative for the either one, or it may be neutral in nature for both the organisms living inside a symbiotic relationship.

The symbiotic association between the different organisms are of four different natures or levels,which are as follows:

Mutualism: Inside the relationship or connection between any number of organisms in which there is mutual benefit for both the organisms, is called as the mutualism. For example, the insecticides living in the plants roots or any part of its body.
Parasitism:Such a symbiotic relationship is which between any two living organism either one of them is benefited while the other one is harmed by its effect. For example, the tape worms in the living body.
Predation: It is more simple to understand as the prey is hunted down and killed in order to fulfill the needs of the predator.For example the lion and the impala.
Commensalism: The type of association between the living organism in which one of the organism is benefited, while other is neither benefited nor harmed. For example the marine life on the back of the crab's body.

4 0

3 years ago

Read 2 more answers

The ion imbalance known as ________ initially leads to ________ in excitable cells

saveliy_v [14]

Hyperkalemia, depolarization
Hope this helps.

3 0

4 years ago

How do i explain this?

Daniel [21]

Answer:

Oxygen debt is a physiological phenomenon in which a person consume oxygen at fater rate that it replaced by new oxygen molecules.

As shown in the graph, oxygen debt occurs just after the end of exercise because oxygen is consumed at faster rate during exercise that leads to increased respiration and body attempts to replace the used oxygen.

To overcome the problem of oxygen debt, a person should take rest that allows the body to replenish its oxygen supply.

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4 years ago

What did Miescher contribute to the discovery of DNA? When was this discovery made?

NikAS [45]

Answer:

Explanation:

In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule. Phoebus Levene was an organic chemist in the early 1900's. He is perhaps best known for his incorrect tetranucleotide hypothesis of DNA.

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3 years ago