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cestrela7 [59]
2 years ago
13

100 POINTS!!!

Biology
1 answer:
ollegr [7]2 years ago
3 0

Answer:

After first exposure to an antigen, it can take about three weeks for antibodies to reach a detectable level. The body will react to disease by creating antibodies and testing their effectiveness against the unknown antigen.

Antibodies are the body's way of fighting off foreign threats. Also known as immunoglobulin, they detect and attack pathogenic bacteria and viruses. These antibodies detect a protein that is unique to the surface of the pathogen called the antigen.

At times, we can see an increase in antibodies for one disease, for example, Lyme disease, in the presence of non-Lyme disease antigens. This is often due to antigenic variation, which is a method used by pathogens to mask their respective antigens. There are also general use antibodies that will increase in reaction to any pathogen.

As with any illness, a patient who receives treatment sooner will fare better than those whose treatment is delayed. This is due to the fact that earlier treatment with antibiotics will allow the body to fight off the infection before the bacteria can reproduce further.

After the first immune response, antigen-specific antibodies will remain for some time to provide the body with "immunity" to the pathogen, while general-purpose antibodies will return to a base value.

To learn more visit:

brainly.com/question/7597406?referrer=searchResults

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What is the effect of using scaffold proteins on precision and amplification capacity in cell signaling?
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The correct answer for the question that is being presented above is this one: "C. Precision is compromised, but amplification is improved."

Here are the following choices:

A. Both precision and amplification are improved<span>B. Precision is improved, but amplification is limitedC. Precision is compromised, but amplification is improved.D. Both precision and amplification are limited.</span>
8 0
3 years ago
The oxygen that we are all taught is a product of photosynthesis comes from what?
harkovskaia [24]
The oxygen that we are all taught is a product of photosynthesis comes from what?

Answer:
Splitting of water to replace chlorophyll electrons.
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3 years ago
Vertebrate span across a diverse array of life on earth today. Fish are the first to evolve and amphibians still live with stron
poizon [28]

Answer:

Fossil evidence shows that vertebrates made the transition from water to land during the <u>DEVONIAN</u> period.

<u>SALAMANDERS</u> are amphibians that most closely resemble early tetrapods in body form with a long tail and 4 limbs of similar length.

A distinctive characteristic of mammals that is not observed in other vertebrates is <u>ENDOTHERMY</u>.

By the end of the <u>CAMBRIAN </u>period, all major animal lineages were present in the seas due to a great adaptive radiation of animals.

The vertebrate lung first appeared in <u>AMPHIBIANS</u>

Explanation:

Vertebrates started to transition from water to land later in the Devonian period. The vertebrates had to adjust to living on land such as withstanding gravity, breathing in air, adjusting senses to living on land than on water, and significant water loss due to the new environment. This was a big step in the realm of evolution because vertebrates were now able to thrive because they are no longer limited to the resources and space of water.

Salamaders are said to have not evolved much and have some characteristics that resemble early tetrapods. Regeneration of limbs is one of the salamanders unique capability which early tetrapods possessed.

Amphibians are ectotherms, which means they get their energy outside their body or their source of heat would be the heat from the environment. Amphibians and reptiles are ectotherms, and mammals are endotherms. Endotherms can generate heat internally.

The Cambrian period marks the Cambrian Explosion. According to fossil records modern organisms evolved rapidly and soon after split into different phyla due to adaptive radiation as a result of the extinction of dinosaurs.

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5 0
3 years ago
Sombody who knows science good help me
zhannawk [14.2K]

Answer:

I can help at anytime, but I don't know how to contact you with brainly.

Explanation:

6 0
3 years ago
Read 2 more answers
In a mating between IV-2 and IV-5, what is the chance that the child produced would have both nail-patella syndrome and alkapton
s344n2d4d5 [400]

The chance that the child produced would have nail-patella syndrome from this mating is 1/8 (12.5%) and the chance that the child has alkaptonuria is zero (0%). It is a case of recessive phenotypes.

<h3>Pedigree and genetic inheritance</h3>

The answer is incomplete, but I have now included the Figure to answer it. The vertical lines indicate nail-patella syndrome, while horizontal lines indicate alkaptonuria.

Pedigree is a diagram showing the genealogical relationships in different individuals, which is usually used to represent the inheritance pattern of a given phenotype.

In this case, the nail-patella syndrome and alkaptonuria are recessive phenotypes, which means that individuals may be heterozygous carriers but they need to have both mutated alleles to express each condition.

In the pedigree, it is possible to observe that the individual IV5 expresses both syndromes (nail-patella syndrome and alkaptonuria), whereas there is a 1/8 chance that the individual IV2 is a carrier of the nail-patella syndrome.

Learn more about pedigree here:

brainly.com/question/2952835

7 0
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