viruses and human health is false? a- in many diseases caused by viruses, the virus attacks cells as it reproduces b- many viral diseases can be controlled through vaccinations c- some viruses can remain dormant in the body for years before disease symptoms appear d- most viral infections are difficult to treat, but they can be finally destroyed by anti

viruses and human health is false? a- in many diseases caused by viruses, the virus attacks cells as it reproduces b- many viral diseases can be controlled through vaccinations c- some viruses can remain dormant in the body for years before disease symptoms appear d- most viral infections are difficult to treat, but they can be finally destroyed by anti

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter17: The Immune System And Disease

Section: Chapter Questions

Problem 2ACQ: Figure 17.6 Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane....

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Viruses are not considered living because they ___________ . a. are not made of cells b. lack cell nuclei c. do not contain DNA or RNA d. cannot reproduce
Figure 17.6 Influenza virus is packaged in a viral envelope, which fuses with the plasma membrane. This way, the virus can exit the host cell without killing it. What advantage does the virus gain by keeping the host cell alive?
What happens during the lytic cycle of viruses? A large number of phages are released at a time. Viral DNA is incorporated into the host genome. Many bacterial cells containing viral DNA are produced. The virus-host relationship usually lasts for generations. O The viral genome replicates without destroying the host. O
Clear select Which of the following statements concerning viruses and human health is 1 false? O in many diseases caused by viruses, the virus attacks cells as it reproduces O many viral diseases can be controlled through vaccinations O some viruses can remain dormant in the body for years before disease symptoms appear O most viral infections are difficult to treat, but they can be finally destroyed by antibiotics
Which of the following statements concerning viruses and human health is false? a-in many diseases caused by viruses, the virus attacks cells as it reproduces b- many viral diseases can be controlled through vaccinations c- some viruses can remain dormant in the body for years before disease symptoms appear d-most viral infections are difficult to treat, but they can be finally destroyed by antibiotics
Why would viral genome integration into host cell integration be advantageous to a virus? It enables the virus to kill the cell. It allows the virus to infect cells it would not normally infect. It allows the virus to be passed on to future generations of host cells. It allows the virus to destroy the host cell's DNA. It speeds up viral replication.
"Viruses without borders" is what it means? What's the reason that viral infections are going up as war, famine and disasters occur.
The real-world scenario that we are going to look as is as Shakespeare would say “Viruses are living or not living - that is the question!” Viruses must be living since they can cause cancer and warts.
Which virus structure is found ONLY in viruses that infect animal cells? O Capsid (protein coat) Nucleic acid (DNA or RNA) O Viral envelope
Which properties are targeted when scientists develop antiviral drugs? removal of viral MRNAS prevention of the host from becoming infected O removal of viral proteins interference with viral replication
After the initial infection, may latent viruses be "reactivated" months or years later, replicating and causing the host to "shed" infectious viruses? O yes O no 7.
A person is infected with HIV. The individual is treated with several drugs, including azidothymidine (AZT). Which of the following is the most immediate effect of this drug? O It inhibits formation of the capsid. O It does not allow the viral genome to become integrated into the host genome. O It allows reverse transcriptase to proofread, and this will allow successful treatment with a vaccine. O It does not allow the virus to make a DNA copy of its genome.