ADVANCED PLACEMENT (AP) BIOLOGY: Understanding Viruses And Prions 31 Questions Correctly Answered | 100% Rated

ADVANCED PLACEMENT (AP) BIOLOGY: Understanding Viruses And Prions 31 Questions Correctly Answered | 100% Rated Question 1 Which of these is an example of a disease cause by a prion (misfolded protein)? Possible Answers: Syphilis HIV Tuberculosis Bovine spongiform encephelopathy (mad cow disease) Lupus Correct answer: Bovine spongiform encephelopathy (mad cow disease) Question 2 Human immuodiffiency virus (HIV) contains a special type of enzyme that makes it difficult to classify and develop a vaccine for the virus. The special enzyme of HIV is __________. Possible Answers: Peroxidase Lactose dehydrogenase α-ketoglutarase Luciferase Reverse transcriptase Correct answer: Reverse transcriptase Question 3 Which of these statements is NOT a reason why viruses are not considered to be living? Possible Answers: Viruses contain either RNA or DNA; never both. Viruses cannot reproduce independently. Viruses cannot metabolize nutrients for energy. Viruses cannot survive outside of a host. Correct answer: Viruses cannot survive outside of a host. Question 4 Why would you never see ribosomes in a virus? Possible Answers: Viruses leave their ribosomes outside of the host cell as they have already synthesized all necessary proteins prior to infection. Viruses hijack the ribosomes of host cells in order to create the necessary proteins when reproducing. Viruses do not use ribosomes when making proteins and have adapted a different method to translate proteins. Viruses do not have any need to create proteins, so ribosomes would be worthless. Correct answer: Viruses hijack the ribosomes of host cells in order to create the necessary proteins when reproducing. Question 5 Why is it necessary to receive a flu shot every year in order to avoid getting the flu? Possible Answers: Your body must be introduced to influenza yearly in order for your body to continue creating antibodies. Your body must be resupplied with fresh antibodies every year in order to maintain immunity to the flu. Influenza destroys the body's antibody reserves and yearly vaccinations are needed to restore antibody levels. Influenza undergoes genetic mutations throughout the year which allows it to evade previously created cellular defenses. Correct answer: Influenza undergoes genetic mutations throughout the year which allows it to evade previously created cellular defenses.