Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 8MCQ
The earliest smallpox vaccines were infected tissue rubbed into the skin of a healthy person. The recipient of such a vaccine usually developed a mild case of smallpox, recovered, and was immune thereafter. What is the most likely reason this vaccine did not kill more people?
- a. Skin is the wrong portal of entry for smallpox.
- b. The vaccine consisted of a mild form of the virus.
- c. Smallpox is normally transmitted by skin-to-skin contact.
- d. Smallpox is a virus.
- e. The virus mutated.
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Why is smallpox so dangerous?
A.
It has killed more people in human history than any other disease that we know of.
B.
It's transmitted by aerosol droplets and is therefore very contagious.
C.
Transmission rates are around 60%, which is higher than Ebola.
D.
All of the above
Read the article and then answers the following question.3. Why is it difficult to create a vaccine for AIDS? a. the virus is too well hidden in the body b. the virus is constantly changing c. vaccines only work on bacterial infections d. not enough research money 4. Years ago, doctors would prescribe antibiotics for many symptoms of a common cold. Today, it is much more difficult to get a prescription. Why has the medical industry changed its procedures? a. too many antibiotics can create resistant bacteria b. pharmaceutical companies objected to the amount of prescriptions c. antibiotics can make people sick d. doctors are against prescribing medicines 5. To see evolution in action, you should look at organisms with: a. short lifespans b. complex body systems c. large populations d. short amount of time between generations
Which of the following statements about viruses is false? a. Viruses require a host cell to reproduce. b. Viruses are sensitive to interferons. c. Viral infections can generally be controlled with antibiotics. d. Viruses encode their own genome.
Chapter 15 Solutions
Microbiology: An Introduction
Ch. 15 - Compare pathogenicity with virulence.Ch. 15 - How are capsules and cell wall components related...Ch. 15 - Prob. 3RCh. 15 - Explain how drugs that bind each of the following...Ch. 15 - Prob. 5RCh. 15 - Prob. 6RCh. 15 - Prob. 7RCh. 15 - Which of the following genera is the most...Ch. 15 - How can viruses and protozoa avoid being killed by...Ch. 15 - Prob. 10R
Ch. 15 - The removal of plasmids reduces virulence in which...Ch. 15 - Prob. 2MCQCh. 15 - Prob. 3MCQCh. 15 - All of the following can occur during bacterial...Ch. 15 - The ID50 for Campylobacter sp. is 500 cells; the...Ch. 15 - Prob. 6MCQCh. 15 - A drug that binds to mannose on human cells would...Ch. 15 - The earliest smallpox vaccines were infected...Ch. 15 - Prob. 9MCQCh. 15 - Which of the following statements is true? a. The...Ch. 15 - Prob. 1ACh. 15 - Prob. 3ACh. 15 - How do each of the following strategies contribute...Ch. 15 - On July 8, a woman was given an antibiotic for...Ch. 15 - Explain whether each of the following examples is...Ch. 15 - Cancer patients undergoing chemotherapy are...
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- The use of multiple drugs in HAART to treat AIDS has a. completely removed the virus from infected individuals. b. reduced the viral level in the bloodstream to undetectable levels. c. been a complete failure. d. been supplanted by the new HIV vaccine.arrow_forwardHere are three different methods that were used to protect people from smallpox: 1. Blowing ground-up scabs into a person’s nostrils.2. Scratching fluid and puss from smallpox pustules into a person’s skin.3. Injecting a virus related to the smallpox virus. a. What does each method have in common with the others? b. What is one difference between the three methods?arrow_forwardIndicate whether each of the following statements is true (T) or false (F). a. An unsubstantiated association between the MMR vaccine and autism has led some parents to choose not to vaccinate their children. b. The hepatitis B vaccine is associated with cancer of the liver. c. Acellular vaccines have fewer side-effects than cellular vaccines. d. Recombinant DNA technology can be used to reduce the virulence of pathogenic viruses. e. The Rotarix vaccine is a subunit vaccine composed of purified VP4 and VP7 glycoproteins of the human rotavirus. f. Rotavirus is a double-stranded DNA virus that lends itself well to recombinant DNA manipulation.arrow_forward
- Smallpox is the only disease that has been eradicated from the world. Although we are not yet there for any other disease that affects human beings, some diseases may potentally be eradicated in the future. Which of the following is the least likely to ever be eradicated? a. Cysticercosis b. Polio c. Measles d. Pneumoniaarrow_forwardWhat can be learned from the Dengue Vaccine Controversy? a. All vaccines have harmful effects and should not be trusted.b. Taking vaccines should be voluntary and side effects should be explained to the recipient or doctors at least.c. Vaccines on their early development should be taken with great precaution.d. Vaccines are deadly.arrow_forwardWhich of the following is not caused by a poxvirus?a. molluscum contagiosum b. smallpox c. cowpox d. chickenpoxarrow_forward
- The --------------- retrovirus contains a ______________ genome: Select one: a. chicken pox, circular DNA b. Sars CoVII, double-stranded RNA c. measles, double-stranded DNA d. HIV, Single-stranded RNAarrow_forwardWhich receptors of the influenza virus are responsible for binding tothe host cell?a. hemagglutinin b. neuraminidase c. type A d. capsid proteinsarrow_forwardHere are three different methods that were used to protect people from smallpox: 1. Blowing ground-up scabs into a person’s nostrils.2. Scratching fluid and puss from smallpox pustules into a person’s skin.3. Injecting a virus related to the smallpox virus. How would the immune response to these methods be the same or different from smallpox virus infection? How would each of these methods protect from infections with smallpox?arrow_forward
- After Iraq was found not to have weapons of mass destruction after all, the concern about which of the following died down? A. Anthrax B. Ebola C. Smallpox D. Hantavirusarrow_forwardSelect a drug or drugs that can prevent a viral nucleic acid from beingreplicated.a. retrovir b. acyclovir c. saquinavir d. both a and barrow_forwardWhich of the following most directly causes the symptoms experienced by a person who is infected with a coronavirus, such as SARS-CoV-2? A. The virus eating the cells of the respiratory tract B. Viral spikes poking holes in lung cells C. Immune response of the hostarrow_forward
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