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1 . Viruses can vary with respect to all of the next characteristics besides _____. ( Overview) Your Answer: | the presence or absence of a membranous envelope | | Right Answer: | the occurrence or a shortage of metabolic machinery | | No .
This is a difference among malware. 2 . A microbiologist analyzes chemicals from an enveloped RNA disease that dégo?tant monkeys. This individual finds that the viral cover contains a protein feature of monkey cells. Which will of the subsequent is the most very likely explanation? ( Concept nineteen. 1) The Answer: | Its existence is a result of the monkey’s immunological response. | Correct Response: | The viral package forms because the virus leaves the host cell. | | No . This does not describe the presence of either the envelope or the goof protein located on the envelope. several. Which of the following, in the event that any, may be a component of any virus? ( Concept nineteen. 1) Your Answer: | single-stranded (ss) RNA | | Appropriate Answer: | All of the outlined responses are correct. | | No . Single-stranded RNA is definitely the genetic material of particular viruses, nevertheless there is a better answer. 5. Viruses that infect bacteria are called _____. ( Principle 19. 1) Your Answer: | capsomeres | | Correct Solution: | bacteriophages | |
No . Capsomeres are the healthy proteins subunits in the capsid, the protein layer that encloses the virus-like genome. a few. HIV, the virus that creates AIDS, just infects specific cells inside the immune system. It is because _____. ( Concept 19. 2) The Answer: | other cellular material produce toxins that ruin the computer virus before infection can take place | | Correct Solution: | the virus binds to certain receptors which might be only present on specific immune cells | | Number This is not authentic. 6. Tumor cells often times have protein radio molecules on their surfaces that differ from all those on normal body cells.
With all this fact, so how does15404 viruses be taken to treat cancer? ( Concept nineteen. 2) Your Answer: | Viruses could possibly be engineered to infect only cancer skin cells by transforming viral surface proteins to acknowledge only the receptors on malignancy cells. | Correct. The host specificity of viruses could possibly be used to help to make cancer skin cells “sick” whereas normal body cells would not always be infected. This approach would reduce the collateral damage seen in chemotherapy. 7. What makes phages useful in treating bacterial infections in human beings? ( Strategy 19. 2) Your Answer: | Because of their host specificity, they only attack bacterias.
They do not impact eukaryotic skin cells. | | Correct Answer: | The first 3 answers are appropriate. | | No . This is true, but there is a better answer. eight. Which in the following may a disease do with out a host cell? ( Idea 19. 2) Your Answer: | transcribe DNA | | Correct Answer: | Not one of the listed responses is correct. | | No . DNA viruses utilize RNA polymerase of the host to transcribe viral DNA. 9. If a virus infects an Elizabeth. coli cellular, what area of the virus enters the bacterial cytoplasm? ( Concept 19. 2) Your Answer: | the butt fibers | | Correct Answer: | only the nucleic acid | | Number
The end remains beyond the host cellular. 10. The phage reproductive cycle that kills the bacterial sponsor cell is a _____ routine, and a phage that usually reproduces this way is a _____ phage. ( Concept nineteen. 2) The Answer: | lysogenic , virulent | | Right Answer: | lytic , virulent | | No . A computer virus with a lysogenic cycle is a temperate malware. 11. In the lytic existence cycle of phages _____. ( Idea 19. 2) Your Answer: | the viral capsid is set up according to the innate information from the bacterium | | Appropriate Answer: | the cellular typically passes away, releasing many copies from the virus | | No .
The viral capsid assembles automatically from its subunits, the capsomeres. 12. Limitation enzymes support defend bacteria against virus-like infections by simply _____. ( Concept 19. 2) Your Answer: | cutting viral DNA once it has entered the cell | Correct. Limitation enzymes cut viral DNA, but bacterial DNA is usually modified so as to safeguard it against the enzymes. 13. A phage that inserts itself in the host DNA is called _____. ( Concept 19. 2) Your Response: | a capsomere | | Right Answer: | lysogenic | | No . Capsomeres will be the protein subunits of capsids. 14. A prophage is definitely a(n) _____. Concept 19. 2) Your Answer: | virus that infects bacterias | | Correct Solution: | viral genome which has been incorporated in a bacterial cell’s chromosome | | No . This kind of virus is referred to as a bacteriophage. 15. In the lysogenic pattern of phages _____. ( Concept nineteen. 2) Your Answer: | the viral nucleic acidity inserts by itself into the host chromosome | | Right Answer: | All of the detailed responses happen to be correct. | | No . This kind of statement applies, but it is usually not the very best response. of sixteen. What is the origin of the phospholipid membrane that envelops various animal malware? ( Concept 19. ) Your Answer: | It can be “stolen” from your host cellular, but it includes some protein encoded by viral genome. | Correct. New viruses “cloak” themselves in phospholipid membrane layer derived from the host, nevertheless certain elements encoded by the viral genome are also within the envelope. 17. Why can flare-ups of herpesvirus illness recur within a person’s your life? ( Idea 19. 2) Your Answer: | Herpesvirus may hide itself in a cell’s elemental envelope, making it very difficult pertaining to the immune system to realize it. | | Accurate Answer: | Herpesvirus can leave their DNA lurking behind as minichromosomes in neural cell nuclei.
Stress can trigger an additional round of virus development, producing characteristic blisters and sores. | | No . Herpesvirus does use the nuclear envelope’s membrane as its envelope a few times, but recurrences result from the computer virus leaving the DNA inside the nucleus of certain neural cells. Once triggered, the viral GENETICS can set off another rounded of malware production. 18. How do retroviruses, such as HIV, differ from other viruses? ( Concept nineteen. 2) The Answer: | They include DNA that is used as a design template to make RNA. | | Correct Solution: | They can transcribe a DNA copy from a RNA theme. | | No .
Retroviruses are generally not DNA viruses. 19. Change transcription, completed by retroviruses, is definitely the process with which _____. ( Concept 19. 2) The Answer: | RNA details is “read” to form a proteins molecule | | Correct Answer: | RNA data is replicated into DNA | | No . This is certainly translation. 20. Which statement below is a correct comparison of a “regular” RNA virus and an RNA retrovirus? ( Principle 19. 2) Your Solution: | The particular RNA retrovirus performs translation. | | Correct Response: | The two produce protein coats by means of translation of mRNA. | | No . Translation is required pertaining to the produce of viral proteins. 1 ) When comparing DNA and RNA viruses, which in turn mutate more quickly, and how come? ( Strategy 19. 2) Your Response: | RNA viruses, because RNA can be single-stranded and therefore more at risk of mutations | | Appropriate Answer: | RNA viruses, because zero proofreading is done on RNA molecules | | No . RNA viruses mutate more quickly because RNA molecules are not critique. 22. The symptoms of a virus-like infection within a person may be caused by _____. ( Idea 19. 3) Your Response: | the reaction of the person’s immune system to the infection | | Accurate Answer: | All of the listed responses will be correct. | | No .
This statement holds true, but there exists a better response. 23. Vaccines for viral diseases will be _____ and help prevent infection by _____. ( Strategy 19. 3) Your Response: | protease inhibitors , preventing synthesis of cover proteins | | Right Answer: | harmless derivatives of pathogenic viruses , stimulating immune system to mount a protection against the genuine pathogen | | No . Protease inhibitors are generally not vaccines tend to be instead a different class of antiviral drugs. 24. Rising viruses can originate from which will of the subsequent sources? ( Concept 19. 3) The Answer: | animal malware | |
Correct Response: | All the listed answers are right. | | No . This is any source, nevertheless there is a better answer. twenty-five. What is the function of hemagglutinin in the influenza disease? ( Strategy 19. 3) Your Solution: | Hemagglutinin is associated with assembling the membrane package that the malware uses like a cloak because it leaves an infected cellular. | | Correct Solution: | Hemagglutinin is the necessary protein that helps the influenza virus attach to sponsor cells. | | No . Hemagglutinin helps the virus attach to host skin cells. 26. Wild birds act as an all-natural _____ to get the autorevolezza _____ disease. Concept 19. 3) Your Answer: | reservoir , C | | Appropriate Answer: | reservoir , A | | Number Influenza type C only infects humans. 27. Which will of the following is a good example of vertical indication of a virus in crops? ( Principle 19. 3) Your Response: | A great infected plant produces seed that contain the virus, offering rise to infected progeny. | Correct. Top to bottom transmission identifies the distributed of a virus from parent or guardian to children. 28. Flower viruses pass on throughout the herb by way of _____. ( Principle 19. 3) Your Solution: | the lymphatic program | | Correct Answer: | plasmodesmata | |
No . Plants do not have a lymphatic program. 29. Round RNA substances that function like a virus in plant life are called _____. ( Concept 19. 3) Your Answer: | viroid | Correct. Viroids are small molecules of circular RNA that contaminate plants. 31. Prions happen to be _____ which have been thought to trigger disease by simply _____. ( Concept nineteen. 3) The Answer: | mutant GENETICS molecules , encoding harmful proteins | | Right Answer: | abnormally formed proteins , inducing comparable but normally shaped proteins in the brain to adopt the abnormal contact form | | No . Prions happen to be proteins. 23.
A new pathogenic form of autorit? A can emerge when _____. ( Concept 19. 3) Your Answer: | a virus with a book genetic make-up recombines with viruses that circulate generally among human beings | | Correct Answer: | Each of the listed factors likely help the emergence of a new pathogenic strain of influenza A. | | Number This can help the emergence of the new pathogenic strain of influenza A virus but there is a better answer. 32. What is the prevailing hypothesis for the surprisingly low infection and mortality level among people over 64 years of age during the 2009 H1N1 outbreak? Concept nineteen. 3) The Answer: | Older people had been likely confronted with earlier H1N1 viruses that primed their immune devices for the virus from the 2009 outbreak. | Correct. It truly is proposed that prior contact with earlier H1N1 viruses primed the immune system of older people so they were able to support an immune response to the recent H1N1 virus. 33. The avian flu disease H5N1 is regarded as a greater long term threat compared to the swine flu virus H1N1 because _____. ( Strategy 19. 3) Correct Answer: | very low significantly higher mortality rate| |
