,1. Multiple Choice: Which of the following microorganisms is
most likely to be found in a hospital setting and is a
common cause of nosocomial infections?
A. Escherichia coli
B. Staphylococcus aureus
C. Pseudomonas aeruginosa
D. Bacillus cereus
Correct Answer: B. Staphylococcus aureus
Rationale: Staphylococcus aureus is known for its ability
to survive on various surfaces, making it a significant cause
of hospital-acquired infections.
2. Fill-in-the-Blank: The process by which bacteria develop
resistance to antibiotics is known as _______.
Correct Answer: Horizontal gene transfer
Rationale: Horizontal gene transfer allows bacteria to
acquire and spread genetic material responsible for
antibiotic resistance.
3. True/False: Endospores are a reproductive structure
formed by bacteria.
Correct Answer: False
Rationale: Endospores are not reproductive structures;
they are survival structures that allow bacteria to withstand
unfavorable conditions.
, Correct Answers: A, B, C
Rationale: These factors contribute to a pathogen's ability
to cause disease by damaging host tissues, adhering to
cells, and evading the host's immune response.
5. Multiple Choice: Which type of immunity is characterized
by the production of antibodies by B cells?
A. Cell-mediated immunity
B. Innate immunity
C. Passive immunity
D. Humoral immunity
Correct Answer: D. Humoral immunity
Rationale: Humoral immunity involves the production of
antibodies by B cells and is a key component of the
adaptive immune response.
6. Fill-in-the-Blank: The enzyme that helps bacteria to
evade the host's immune system by breaking down
hydrogen peroxide is called _______.
Correct Answer: Catalase
Rationale: Catalase breaks down hydrogen peroxide, a
reactive oxygen species produced by the host's immune
cells to kill bacteria.
7. True/False: Gram-positive bacteria have an outer
membrane composed of lipopolysaccharides.
Correct Answer: False
Rationale: It is Gram-negative bacteria that have an outer
membrane composed of lipopolysaccharides; Gram-positive
bacteria have a thick peptidoglycan layer instead.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Bankart. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
