Match the following with the choices on the right Bacteria 1. Eukaryotic photosynthetic organisms that are not plants 2. Nucleic acid in a Archaea Fungi Protozoa Algae Platyhelminthes protein coat 3. An infectious particle that is a protein Nematoda Viruses Viroids 4. Prokaryotes, usually with peptidoglycan Prions cell walls

Match the following with the choices on the right Bacteria 1. Eukaryotic photosynthetic organisms that are not plants 2. Nucleic acid in a Archaea Fungi Protozoa Algae Platyhelminthes protein coat 3. An infectious particle that is a protein Nematoda Viruses Viroids 4. Prokaryotes, usually with peptidoglycan Prions cell walls

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter26: Prokaryotes: Bacteria And Archaea

Section: Chapter Questions

Problem 4TYK: At the health center, a fecal sample was taken from a feverish student. Organisms with corkscrewlike...

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Match the following microorganisms with the descriptionthat best applies:Algae (a) Multicellular nucleated microorgan-Bacteria isms that have branching filamentsFungi (b) Acellular entities that require aProtozoa host for multiplicationViruses (c) Photosynthetic large cells thatHelminthes rarely cause human disease(d) Parasitic worms(e) Large, single-celled nucleated mi-croorganisms(f) Single-celled non-nucleated micro-organisms
At the health center, a fecal sample was taken from a feverish student. Organisms with corkscrewlike flagella and no endomembranes but with cell walls that lack peptidoglycan were isolated as the cause for the illness. These organisms probably belong to the group: a. chlamydias. b. spirochetes. c. Euryarchacota. d. Cyanobacteria. e. Archaea.
There have been recurring cases of mad-cow disease in the United Kingdom since the mid-1990s. Mad-cow disease is caused by a prion, an infectious particle that consists only of protein. In 1986, the media began reporting that cows all over England were dying from a mysterious disease. Initially, there was little interest in determining whether humans could be affected. For 10 years, the British government maintained that this unusual disease could not be transmitted to humans. However, in March 1996, the government did an about-face and announced that bovine spongiform encephalopathy (BSE), commonly known as mad-cow disease, can be transmitted to humans, where it is known as variant Creutzfeldt-Jakob disease (VCJD). As in cows, this disease eats away at the nervous system, destroying the brain and essentially turning it into a spongelike structure filled with holes. Victims experience dementia; confusion; loss of speech, sight, and hearing; convulsions; coma; and finally death. Prion diseases are always fatal, and there is no treatment. Precautionary measures taken in Britain to prevent this disease in humans may have begun too late. Many of the victims contracted it over a decade earlier, when the BSE epidemic began, and the incubation period is long (VCJD has an incubation period of 10 to 40 years). A recent study concluded that 1 in 2,000 people in Great Britain carry the abnormally folded protein that causes VCJD. In spite of these numbers, the death rate from VCJD remains low. It is not clear whether this means that the incubation period for the disease is much longer than previously thought, or whether they may never develop the disease. How can a prion replicate itself without genetic material?
Clostridium difficile infection is the leading causeof hospital-associated gastrointestinal illness. It is typicallytreated with a course of antibiotics, but the infection recursin about 20% of cases. C. difficile infections are difficult toeradicate because the bacteria exist in two forms: a repli-cating, toxin-producing form and a spore form that is resis-tant to antibiotics. Fecal microbiota transplantation—thetransfer of normal gut microbiota from a healthy individ-ual—can resolve >90% of recurrent infections, a much bet-ter cure rate than further antibiotic treatment alone. Whydo you suppose microbiota transplantation is so effective?
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hich of the following can produce inactive endospore-like bodies that are infectious to human epithelial cells? Rickettsia Echrlichia Bartonella Chlamydia Caulobacter
Micro -endotoxin refers to which type of molecule found in (unique to) gram negative bacteria ..... ( it is not lipopolysaccharide)
A pathogenic bacterium’s toxin causes symptoms thatincrease the bacterium’s chance of spreading from hostto host. Does this information indicate whether thepoison is an exotoxin or endotoxin? Explain.
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