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Exploring Bacteria: A Knowledge Quiz

This quiz tests the knowledge of bacteria, their characteristics, evolutionary relationships, and their role in various biological processes, including their use in environmental applications. It is designed for students and anyone interested in microbiology.

#Microbiology #Bacteria #Quiz #Biology #Environmental Science

1 Bacteria capable of digesting the ________ in petroleum are often used to clean up oil spills.

2 What is the genus authority of Pseudomonas?

3 These evolutionary domains are called Bacteria and ________.

4 What does the following picture show? Overview of bacterial infections and main species involved. Many bacteria reproduce through binary fission. Flagellum of Gram-negative Bacteria. The base drives the rotation of the hook and filament. Filaments of photosynthetic cyanobacteria.

5 What classis does Actinobacteria belong to?

6 What does the following picture show? Many bacteria reproduce through binary fission. Bacteria display many cell morphologies and arrangements. Overview of bacterial infections and main species involved. Antonie van Leeuwenhoek, the first microbiologist and the first person to observe bacteria using a microscope.

7 What does the following picture show? Antonie van Leeuwenhoek, the first microbiologist and the first person to observe bacteria using a microscope. Overview of bacterial infections and main species involved. Streptococcus mutans visualized with a Gram stain. Color-enhanced scanning electron micrograph showing Salmonella typhimurium (red) invading cultured human cells.

8 Capsules or slime layers are produced by many bacteria to surround their cells, and vary in structural complexity: ranging from a disorganized slime layer of extra-cellular ________, to a highly structured capsule or glycocalyx.

9 ________ are viruses that change the bacterial DNA.

10 The nucleoid contains the chromosome with associated proteins and ________.

💡 Interesting Facts

  • the anticancer agent Salinosporamide A (skeletal formula pictured), which recently entered clinical trials, is produced by marine sediment-dwelling bacteria.
  • the hslVU protein complex (pictured) that degrades damaged proteins in bacteria, probably resembles the evolutionary ancestor of the proteasome, a required component of all eukaryotic cells.
  • the only effective way to manage the bacterial plant disease citrus canker is to destroy all infected citrus trees.
  • some bacteria and parasitic protozoa escape extreme conditions like desiccation and unavailability of food by forming microbial cysts.
  • purity of the Sasthamkotta Lake water for drinking use is attributed to presence of a large number of larvae called cavaborus, which consume much of the lake's bacteria.
  • ADP-ribosylation, a posttranslational protein modification, is involved in the actions of several bacterial toxins in diseases such as cholera and whooping cough.
  • human skin flora includes roughly 1,000 species of bacteria.
  • new bacterial species names are not considered valid until published in the International Journal of Systematic and Evolutionary Microbiology.
  • Richard Lenski's long-term evolution experiment with E. coli has been tracking genetic changes in bacteria for over 20 years.
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