Exam 3: Bacteria and Archaea

Spirochetes have a twisting and flexing locomotion due to appendages called ________.

A 23 year-old female presents at a walk-in clinic with a fever, swollen lymph nodes and yellow spots on the throat. A rapid strep test comes back positive, confirming an infection with Streptococcus pyogenes, which has a thick layer of peptidoglycan in its cell wall. In which of the following taxonomic divisions does S. pyogenes belong?

The chemical components of ribosomes are proteins and ________.

The site(s) for most ATP synthesis in bacterial cells is(are) the ________.

Cells form a ________ arrangement when cells in a chain snap back upon each other forming a row of cells oriented side by side.

If during the Gram stain procedure, the bacterial cells were viewed immediately after crystal violet was applied, gram-positive cells would be purple but gram-negative cells would be colorless.

Which of the following is not a characteristic of bacteria?

The typical definition of a species is one with distinct characteristics that produce viable offspring when mated with another organism in the same species. Bacterial species cannot be defined as readily, due to the fact that

Which of the following does not pertain to endotoxin?

Which of the following species of bacteria is not closely related to the others?

The outcome of the Gram stain is based on differences in the cell's ________.

Plasmids ________.

Bacterial cells could have any of the following appendages except ________.

Movement of a cell toward a chemical stimulus is termed ________.

Each bacterial species represents a distinct organism that can produce viable offspring when mating with other bacteria of its kind.

Halobacterium salinarium lives in and requires salt. This is an example of an archaeabacterium described as a(n) ________.

The provider educates the patient about his condition, based on information from the laboratory findings and clinical presentation. Later, the RN reinforces the teaching and explains why this infection may be difficult to treat with antibiotics. Which part of the cell envelope restricts the passage of many of drugs into gram-negative bacteria?

The transfer of genes during bacterial conjugation involves rigid, tubular appendages called ________.

The RN provides education for the family about the laboratory findings. Which of the following statements correctly describes the medical importance of a bacterial capsule?

Which statement below supports the argument that gram-negative cells are structurally weaker than gram-positive cells?