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Oliga [24]
1 year ago
11

How is a viral antigen, like EBV, recognized by T cells? A. An antigen fragment is presented within class I MHC to the T cell re

ceptor. B. Interferon proteins stick to the surface of infected cells. C. T cells recognize antibodies that have bound to viral particles. D. The virus is engulfed by T cells using Toll-like receptors.
Biology
1 answer:
aniked [119]1 year ago
8 0

Viral antigens like EBV are usually recognized by T cells involving an antigen fragment present within class I MHC to the T cell receptor.

Ebstein Barr Virus

The Epstein-Barr virus is a human herpes virus with unusual biological characteristics.

  • It lives in practically every human person in a dormant condition in resting memory B lymphocytes
  • It is also a strong transforming virus in vitro for B cells and is linked to numerous significant lymphomas, including Burkitt's, Hodgkin's disease, and immunoblastic lymphoma.

With the exception of the memory compartment, each stage of the cycle has been shown to be possibly controlled by the immune response.

Epstein-Barr virus (EBV), commonly known as human herpes virus 4, is a double-stranded DNA herpes virus that is extensively spread. It is the cause of infectious mononucleosis.

  • EBV is most usually transmitted by body fluids, particularly saliva. EBV, on the other hand, can transmit by blood and sperm during sexual intercourse, blood transfusions, and organ transplants.

EBV can be transferred by utilizing materials that have recently been used by an infected individual, such as a toothbrush or a drinking glass.

  • The virus is likely to survive on an object for at least as long as it is wet.
  • When you initially get infected with EBV (primary EBV infection), you might spread the virus for weeks or even months before you notice any symptoms.
  • Once the virus has entered your body, it remains dormant.

Hence, the correct answer is option A

Learn more about EBV here,

brainly.com/question/12926983

# SPJ4

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Which form successively larger vessels that carry blood toward the heart?
victus00 [196]

Answer:

Veins.

Explanation:

Heart is the main organs of circulatory system that transport blood in the body.Human heart is four chambered and separates the oxygenated and deoxygenated blood in the body.  

Arteries are responsible for the passage of blood from heart to the body parts. The deoxygenated blood from the body collect in the veins and transfer to heart. Arteries has high pressure than veins and veins are thinner than artery.

Thus, the answer is veins.

4 0
3 years ago
The kingdom Eubacteria is so called as they have a "True" nucleus.<br> True<br> False
Marta_Voda [28]
I believe false. It should be
4 0
2 years ago
What type of solution is this cell sitting in?
Dafna1 [17]

Answer:

The correct option is A. The cell is sitting in a hypertonic solution.

Explanation:

A hypertonic solution is a solution in which there are more number of solutes present in the solution than inside the cell. The solutes then tend to pass into the cell through diffusion from the solution.

As it can be seen in the diagram, the concentration of salt is more in the solution i.e 40%. Hence, the salt from the solution enters into the cell by diffusion and has a concentration of 10% inside the cell which shows the cell to be placed in a hypertonic environment.  

6 0
3 years ago
Data was collected concerning Galapagos bird beak size over time. There are several species finches, and they are also known as
astra-53 [7]

Finches adapt to the new conditions such as drought by changing the size, shape and depth of their beaks. Beak morphology varies according to drought conditions. Since after the drought, vegetation dries out and the hard, big, tough seeds remain, only the finches with deep beaks will survive. Finches adapt via their beaks to different foods sources and different local conditions.

4 0
3 years ago
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Transposable elements make up 44% of the human genome. What is thought to be their function?
AfilCa [17]

Transposable elements are considered to be responsible for vast range of genome diversity and gene silencing.

Explanation:

Transposable elements are short sequences of DNA that have the ability to move from one location to another in the genome. During this process they copy themselves.

The entire process carried out by transposable elements to copy themselves and move from one location to another is called transposition.

Transposition may result in mutation and is potentially a major source of genome diversity and change. If a transposon inserts itself into the coding region of a gene,it interrupts the coding sequence and inactivates the gene expression.

In addition to this, a transposable element may contain transcription or translation termination signal that will block the gene expression downstream of insertion site.

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3 years ago
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