A leading factor in the development of bacterial resistance is the ability of bacteria to undergo:
1. replication.
2. conjugation.
3. mutation.
4. colonization.
Correct Answer: 3
Rationale 1: Replication is bacteria reproduction, which does not necessarily play a role in the development of resistance.
Rationale 2: Conjugation occurs after resistance has developed and is the ability of the bacterium to pass its resistance to other bacteria.
Rationale 3: Due to their rapid growth, bacteria make errors in duplicating their genetic code, thus forming a mutation.
Rationale 4: Colonization refers to the ability of the bacteria to form a colony in the host.
Global Rationale: Microorganisms have the ability to replicate extremely rapidly. Under ideal conditions Escherichia coli can produce a million cells every 20 minutes, or 1 ? 1021 cells in only 24 hours. During exponential division, bacteria make frequent errors, or mutations, while duplicating their genetic code. These mutations, which occur spontaneously and randomly, occasionally result in a change in physiology that gives a bacterial cell a reproductive advantage over its neighbors.
You might also like to view...
A nurse plans care for a client with a halo fixator. Which interventions should the nurse include in this client's plan of care? (Select all that apply.)
a. Tape a halo wrench to the client's vest. b. Assess the pin sites for signs of infection. c. Loosen the pins when sleeping. d. Decrease the client's oral fluid intake. e. Assess the chest and back for skin breakdown.
A nurse manager has just completed a difficult assignment managing a group that was not cohesive
Which group should the nurse identify as likely having good cohesiveness? Note: Credit will be given only if all correct choices and no incorrect choices are selected. Standard Text: Select all that apply. 1. Nurse who each have 7 to 8 years of experience 2. Nurses who work on different units throughout the hospital 3. Staff nurses who are interested in learning about the task of the group 4. Staff nurses who work with one another on a daily basis 5. Staff nurses who are all between 35 and 40 years of age
The nurse is conducting a health program at the local high school on the prevention of the transmission of HIV. The nurse concludes that the students have met the learning goals when one student states:
1. "I will be safe if I always have sex with the same partner." 2. "I am protected because I take oral contraceptives." 3. "I should not reuse a condom." 4. "I should never use a latex condom."
Which of the following descriptions best summarizes fluid homeostasis?
A) Almost every body organ and system helps maintain homeostasis. B) The cardiovascular and renal systems primarily maintain homeostasis. C) Homeostasis is maintained through intra- and extracellular exchange. D) Homeostasis is maintained by the arterioles, capillaries, and venules.