Viruses can easily mutate exchange genetic material, mechanisms referred to as antigenic drift and antigenic shift. These changes allow the virus to evade the immune system defenses. Match each term with the correct definition Antigenic drift [ Choose ] [Choose Different strains of a virus or strain of different viruses, combine and form a new strain that now has a mixture of the surface antigen The virus changes genetically by accumulating mutations within the genes that code for antibody-binding sites Antigenic shift

Q: Using the terminology you have learned in class, explain how injecting a patient with Corona virus…

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Q: Fig. 5: LAPTM5 transports HIV-1 Env to the lysosome for degradation. a 120, x43 x 137 x146 NL4-3…

A: "ANSWER  By causing damage to HIV-1 Env, LAPTM5 transports it to the lysosome. With Vpr-defective…

Q: Humans have about 21,000 genes, yet can make millions of different antibodies. In 3-4 sentences…

A: VDJ recombination is Also known as somatic recombination, this is a mechanism of genetic…

Q: Antigenic drift refers to: A.The reassortment of genomic segments from different viruses B.Cytotoxic…

A: The immune response or immune reaction is produced by the immune system against the antigen that…

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A: Correct answer is E Inducing cellular proteins that degrade RNA and block protein synthesis.

Q: 1."What protein structural features are involved in the antigenic nature of epitopes?

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Q: Between Influenza and Covid-19 name one similarity of antigenic shift and one difference between the…

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Q: a b

A: To determine: To determine the two V domains that have the amino acid sequences most important for…

Q: The tertiary structure of gp120 is shown below. Please describe the protein (make sure to cover…

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Q: What is the complement strand to this à 3’-AATGCTCGATTCGGCTA – 5’?

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Q: Why might a virus encode its own version of an MHC class I molecule?

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Q: Viruses have countered the specific immune defense systems by developing “disabling” or “evasion”…

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Q: H1N1 and H5N2 can undergo an antigenic shift. The H and N genes are independent gene segments. What…

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Q: Your lab has developed two different antibodies that bind distinct regions of the same surface-…

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Q: An antigen acts is a molecule that acts like a name tag, allowing the immune system to recognize the…

A: An antigen is a molecule which elicits immune response.

Q: each complementation group in the blanks provided below. (Some of the blanks may remain empty.) Cd e…

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Q: The mRNA sequence should ____ the template strand of DNA and  _____ the coding strand of DNA.…

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Q: An antibody binds to a virus with a large surface area of interaction. Sketch the Gibbs-Helmholtz…

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Q: (M/C) Which statement is the best with respect to the role of the different arms of the immune…

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Q: Can a mature B Cell produce an epitope-specific antibody first and then switch to make an antibody…

A: Since we only answer one question at a time, therefore, we are answering the first question listed…

Q: From: "Towards a universal flu vaccine" Researchers are trying to create a universal influenza…

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Q: antibody surface involved in antigen binding varies depending on the size and nature of the antigen.…

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Q: What is the advantage (in terms of having an effective immune system) of having gene segments that…

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Q: Describe the Cytopathic changes in cells and cell cultures infected by viruses.

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Q: M/C Which statement is the best with respect to how the mouse activates the interferon (INF) pathway…

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Viral Infections

Viruses are abundantly found, minute entities that have genetic material enclosed within a protein coat. The proteinaceous material enclosing the genetic material of the virus is called a capsid. The genetic material could be either DNA (deoxyribonucleic acid) or RNA (ribonucleic acid). A virus is too minute to be looked at with naked eyes and therefore visualized with the help of a microscope. They are acellular entities that require a host for processes, such as replication, transcription, translation and multiplication. Plants, animals, and bacteria act as host wherein the virus reproduce. Viruses cannot multiply outside the host's body and thus are considered nonliving outside the host body.