Which of these statements is true? a. An antibiotic is any substance produced by a organism that is antagonistic to the growth of prokaryotes. b. An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of other viruses. c. An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of eukaryotic cells. d. An antibiotic is any substance produced by a prokaryote that prevents growth of the same prokaryote.

24) The infectious bursal disease virus strain D78 is a : a. Genus name b. Species name c. Order name d. Family name

According to Philip Bell’s viral eukaryogenesis hypothesis, genes for the glycolytic pathway, theKrebs cycle, electron transport, and oxidative phosphorylation were all provided by:A. an endosymbiotic gram-negative eubacteriumB. an endosymbiotic archaeobacteriumC. a gram-positive eubacterial host cellD. a double-stranded DNA virusE. an archaeobacterial host cell

which of the following statements about exotoxins is generally not true? a. they have specific targets b. they include the a-b class of toxins c. they include the sidephore class of toxins d. encoding genes typically carried on plasmids or phage e. they are secreted proteins

How is Archae more closely related to Eukarya than to bacteria even though Arche and bacteria are both prokaryotes a.Due to transcription b. replication c. translation d. all of the above

Use the information to answer the following question. Two students were debating whether viruses are living or nonliving. Student A: Viruses are living because they contain DNA or RNA and reproduce. Student B: Viruses are nonliving because they do not grow and do not use energy. Which student's claim is correct and why? O A. Student B, because viruses do not use or make energy. Even though they contain DNA and RNA, many other non-living things also contain DNA and RNA. O B. Student B, because viruses do not grow and do not use energy. Although they have DNA and RNA, they are only able to reproduce with a host cell. O C. Student A, because viruses are able to reproduce and continue to spread their disease to other hosts. As the virus becomes more dangerous, it grows and becomes larger. O D. Student A, because all living things must have DNA or RNA. They must use energy in order to reproduce and make more viruses.

Covid-19 is an example of: A. An infectious disease O B. An emerging infectious disease O C.A zoonotic disease D.A viral disease O E. All of the above

During the Chipotle outbreak, some people were sickened withE. coli, but a DNA profile of the bacterium in their feces showed that it was not the outbreak strain. What conclusion can be drawn fromthis information?a. The person was not sickened by E. coli.b. The person is not part of the outbreak.c. Escherichia coli mutates frequently, making DNA profilingunreliable.d. The person has already begun to recover from the disease.

Short Answer Question: List two ways in which causing disease to humans could benefit a bacterial species - put another way, list two reasons why causing harm to the human body could be good for a bacterial species (but bad for the person). Explain each of these two benefits using 1-3 sentences.

5) The biological species concept cannot be applied to bacteria because a.they reproduce by binary fission b.they are single-celled c.they die d.they are all pathogens