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Savatey [412]
3 years ago
12

What is antigenic variation and how is it beneficial to pathogens? Give an example of two pathogens that demonstrate antigenic v

ariation.
Biology
1 answer:
jeka943 years ago
5 0

Answer:

Antigenic variation is the change occurs in antigenic property of the pathogen. In antigenic variation, a pathogen does changes in its surface protein or carbohydrate so that the immune system of the host is not able to recognize the pathogen.  

This antigenic variation is very much beneficial to pathogens because it gives advantage to the pathogen to infect the host again and again without being recognized by immune cells and to increase in number.

A recombination of avian and human influenza virus in a host like pig created a new version of the influenza virus which became very endemic worldwide is a classic example of antigenic shift. M. tuberculosis evades immune response by doing antigenic shift it's membrane and cause tuberculosis.

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Motor (efferent) neurons carry information _____ the brain whereas sensory (afferent) neurons carry information ______ the brain
Norma-Jean [14]
Neurons are the building blocks of the nervous system. They are the links so that information could be processed as electrochemical signals. There are three fundamental kinds of neurons in our body:

1. Motor neurons - they carry signals from the central nervous system (CNS) to the body parts such as muscle movement
2. Sensory neurons -  they carry signals from other body parts to the CNS
3. Interneurons - interlinking neurons between the brain and the spinal cord

Thus, the correct and complete statement above should be

<span><em>Motor (efferent) neurons carry information </em><em>from </em><em>the brain whereas sensory (afferent) neurons carry information</em><em> to</em><em> the brain.</em></span>
5 0
2 years ago
Why we called clavicle beauty bone?
Stolb23 [73]
<span>From the belief that clavicles- when exposed, e.g. in a topless dress or in a state of semi-nakedness or nakedness- make a woman or man look beautiful</span>
8 0
3 years ago
Some skeletal traits that define modren homosapiens are a small face, high rounded skull, small jaws, bony chin , vertical and h
Lubov Fominskaja [6]

Some skeletal traits that define modern homo sapiens are a small face, high rounded skull, small jaws, bony chin , vertical and high forehead, a narrow nasal aperture, narrow upper body and long legs is known as mental eminence.

<h3>What are skeletal traits?</h3>
  • The morphological diversity of the domestic dog serves as an example of how mammalian skeletal traits may evolve quickly and undergo significant modifications.
  • Here, we employ principal component analysis to identify systems of features characterizing skeletal traits in a population of Portuguese Water Dogs.
  • Through this research, phenotypic variation is divided into separate parts that can be utilized to analyze the genetic networks controlling intricate skeletal traits.
  • We demonstrate that unlinked quantitative trait loci associated with these major components separately support both inverse correlations between structures and correlations within skeletal traits (for example, within the skull or among the bones of the limbs) (e.g., skull vs. limb bones).

To learn more about skeletal traits with the given link

brainly.com/question/13469439

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6 0
1 year ago
What does medics go specifically need/identify from the virus in order to make the vaccine?
baherus [9]

Answer:

Explanation:what do you mean?

5 0
2 years ago
Match each example of a conflict with what it tells you about the character invloed
OLEGan [10]

An example of a conflict is that Beverly is going to make Millicent's challenge extra tough: she seems to enjoy treating people badly.

<h3>What is a conflict?</h3>

A conflict simply refers to any form of disagreement, misunderstanding, or struggle that arises between two (2) or more parties, especially due to any of the following reasons;

  • Differing opinions
  • Incompatibility
  • A difficult challenge.
  • Opposing view
  • Superiority

Some examples of a conflict with what it tells about the character include the following:

  • Beverly is going to make Millicent's challenge extra tough: she seems to enjoy treating people badly.
  • Tracy is rejected by the sorority because of the way she appears: she doesn't look and act like the people who are popular.
  • Millicent is unwilling to abandon her old friend Tracy: she thinks being a good friend is more important than being popular.
  • Millicent is starting to question being in a group: she takes time to think things though carefully.

Read more on conflict here: brainly.com/question/24769299

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6 0
2 years ago
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