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- Viruses that persist in the cell and cause recurrent disease are considereda. oncogenic b. cytopathic c. latent d. resistant1. Give the correct term for each of the follow : a. Viruses that contain an enzyme that copies are information from RNA genes to DNA b. True cells with membrane bound organelles and nucleus c. In bult immune system found in animals to protect themselves d. White blood cell of the immune system tha fight disease81) The RNA polymerase (RDRP) enzyme a. Can act on the nucleus only b. Can only be a viral enzyme. c. Can act in cytoplasm only d. Can be a viral and cellular enzyme
- 6. A bacterial toxin was found to cause septic shock, and upon structural elucidation was found to be a lipid-sugar molecule. a. Septic shock is a i. Sign ii. Symptom iii. Neither b. This toxin is an: C. d. e. i. Exotoxin ii. Endotoxin This toxin is an i. AB Toxin ii. Membrane-damaging toxin iii. Superantigen iv. None True or False: A toxoid vaccine cannot be produce for this toxin This toxin is an i. Neurotoxin ii. Enterotoxin iii. Cytotoxin f. This toxin is an i. Heat-labile ii. Heat-stable iii. Neither g. This toxin is produced in i. Gram-negative only ii. Gram-positive only 111. Either Gram-positive or gram-negative 7. Superantigens (circle one) A. Are exceptionally large antigen molecules B. Cause a very large antibody response C. Elicit a response from a large number of T cells D. Attach non-specifically to B cell receptors E. Assist in a protective immune responseRabies is a viral zoonosis that is transmitted directly from the bite of an infected animal. The rabies vaccine is prepared by treating virus with a chemical that renders it unable to infect and replicate. What type of vaccine is this? a. whole cell b. attenuated c. subunit d. inactivatedIn order for a virus to replicate: a. The host cell must lack a cell membrane O b. The genome must be released in the cytoplasm C. The capsid must enter the host cell cytoplasm d. The host cell should not have the enzymes e. The host cell must be undergoing mitosis
- A bacterium which normally lives in the human body without causing any harm, but when circumstances are right they may cause disease is known as .... O a. Parasitic O b. Exotoxin producer O c. Invader O d. Endotoxin producer e. OpportunisticA prion is a disease-causing agent composed ofa. cells.b. nucleic acid with a protein coat.c. protein alone.d. nucleic acid alone.a cytokint storm is an overproduction of immune cells and their activating compounds- cytokines can be caused by? a. flu viruses and covid-19 b. covid-19 only c. flu viruses only d. all choices are correct e. a coontagious bacterial disease only
- Which statement is true? a. A virion contains DNA and RNA. b. Viruses are acellular. c. Viruses replicate outside of the cell. d. Most viruses are easily visualized with a light microscope.Acquired Immunodeficiency Syndrome is characterized by which of the following?a. Caused by a retrovirusb. A weakened immune systemc. can result in death from cancer or infection.d. AII of the above.95) The herpesviruses: a. Can have an abortive infection b. Have three round of protein translation in its replication cycles, one before genome replication and two after genome replication c. Can have a persistent infection d. the CD4 is the major receptor