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snow_lady [41]
3 years ago
7

A hypothetical bacterium swims among human intestinal contents until it finds a suitable location on the intestinal lining. It a

dheres to the intestinal lining using a feature that also protects it from bacteriophages and dehydration. Fecal matter from a human in whose intestine this bacterium lives can spread the bacterium, even after being mixed with water and boiled. The bacterium is not susceptible to the penicillin family of antibiotics. It contains no plasmids and relatively little peptidoglycan. This bacterium derives nutrition by digesting human intestinal contents (in other words, food). Humans lacking this bacterium have no measurable reproductive advantage or disadvantage relative to humans who harbor this bacterium. Consequently, the bacterium can be properly described as which of the following?
(1). symbiont
(2). endotoxin
(3). mutualist
(4). commensal
Biology
1 answer:
Sonbull [250]3 years ago
5 0

Answer:

(1). symbiont

Explanation:

The bacterium inside the human intestine is a symbiont and the bacterium-human interaction is a symbiosis of the commensalistic type.

Commensalism is a biological interaction (symbiosis) in which members of one species -in this case the bacterium- gain benefits while those of the other species -in this case the human- neither benefit nor are harmed.

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What would be the correct sequencing of DNA to match A, T, T, G, C
Marianna [84]

Answer:

A.

Explanation:

The correct sequencing of DNA nucleotides to match A, T, T, G, C is T, A, A, C, G because the nucleotide matches are: Adenine-Thymine, and Guanine-Cytosine. This works both ways, A-T or T-A, and G-C or C-G. The correct sequence therefore is A.

3 0
3 years ago
The conversion of malate to oxaloacetate in the citric acid cycle takes place with the conversion of NAD to NADH. In this reacti
Mariana [72]

Answer:

a) the oxidizing agent.

Explanation:

In the citric acid cycle, malate is dehydrogenated into oxaloacetate and the reaction is catalyzed by malate dehydrogenase. The released electrons are accepted by NAD+. So, NAD+ is reduced into NADH. The substances that accept electrons during chemical reactions and are reduced to oxidize the other substances are called oxidizing agents. NAD+ serves as an oxidizing agent as it accepts electrons to oxidize malate into oxaloacetate.

5 0
2 years ago
a researcher wishes to know whether there is a significant difference in the number of knee injuries reported among four sports.
boyakko [2]

Answer:

Chi-square analysis cannot be used to check for significant difference in the number of knee injuries among four sports.

Explanation:

The chi-square analysis is a statistical procedure that is used to test association between measured variables or goodness of fits of a set of measured variables to expected outcomes.

<em>In the case of testing for significant difference, chi-square analysis cannot be used as testing for significant difference in two or more means requires using t-test, analysis of variance, or any other relevant statistical procedure.</em>

To compare number of knee injuries reported among four sports for significant difference, the most suitable statistical procedure would be analysis of variance.

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8 0
3 years ago
Sort the sentences based on the type of relationship they describe. Sea lampreys hatch eggs on fish and feed on the fish. Clown
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It would be my clown fish on the Shelly of mapel fish
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3 years ago
If someone is a proven performance-enhancing drug user is eligible for the Hall of Fame in any of the major professional sports,
antiseptic1488 [7]
This is a issue of morality and ethics. So the answer to the first question depends on the perspective of the person. Personally I don't agree with performance enhancing drug use but I do think some of the expectations of athletes who perform in Olympic events increase the pressure to have to use them. So do I think people who use these drugs should be elected into the Hall of Fame. That is hard to answer. But I do not think using drugs takes away all of the achievement an athlete has made. It just proves that the athlete couldn't achieve the rigid sport performance without manipulation. But it doesn't mean they haven't worked hard or trained.

I do think rules should be made for athletes. These rules would definitely weave through most of the athletes we see doing these out of the world sport records every day. That is because many of them have been proven to have used these performance enhancing drugs.

Please vote my answer brainliest. thanks!
3 0
3 years ago
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