Mastering Microbial Growth

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Which one of these is the most effective against endospores?

Sterilization (correct)
Antisepsis
Disinfection
Sanitization

Which one of these is NOT a factor that influences the effectiveness of agents used to control microbial populations?

Color (correct)
Temperature
pH
Humidity

Which one of these is a physical agent used to control microbial populations?

Antiseptic
Disinfectant
Antibiotic
Radiation (correct)

Which one of these is NOT a procedure used to evaluate the effectiveness of antimicrobial agents?

Microbial growth curve (C) Signup and view all the answers

Which one of these is used for disinfection and is usually applied to inanimate objects?

Disinfectant (B) Signup and view all the answers

Which one of these is true about sanitization?

Sanitization is the reduction of microbial population to levels deemed safe. (B) Signup and view all the answers

Which one of these is true about antiseptics?

Antiseptics are chemical agents that kill or inhibit growth of microorganisms when applied to tissue. (C) Signup and view all the answers

Which one of these is true about alcohols, hydrogen peroxide, and others?

They can be antiseptic, disinfectants, sanitizers, or sterilants depending on concentration, length of exposure, and delivery method. (C) Signup and view all the answers

Which one of these is true about -cidal agents?

-cidal agents indicate that they kill microorganisms. (A) Signup and view all the answers

Which one of these is true about the Pattern of Microbial Death?

Population death occurs exponentially. (A) Signup and view all the answers

Which one of these is true about the response to temperature?

Heat shock response helps keep proteins from denaturing. (A) Signup and view all the answers

Which of the following is NOT a factor that affects water activity for bacteria?

Halophiles (D) Signup and view all the answers

Which of the following pH ranges is suitable for acidophiles to grow?

pH 0 - 5 (B) Signup and view all the answers

Which type of microorganism uses oxygen as the ultimate electron acceptor?

Aerobes (B) Signup and view all the answers

What is the temperature and time required for flash pasteurization?

72°C for 15 seconds (D) Signup and view all the answers

Which of the following physical agents is effective against all types of microorganisms, including spores?

Steam sterilization (D) Signup and view all the answers

What is the purpose of using an autoclave for steam sterilization?

To kill all bacteria and endospores (A) Signup and view all the answers

Which of the following chemical agents can be used inside patients?

Antibiotics (D) Signup and view all the answers

What is the main effect of penicillin on bacteria?

Blocking cell wall synthesis (C) Signup and view all the answers

Lyme Disease also known as Barelia burgdorferi which statement is not correct about it.

To protect yourself from ticks the only way is not going out into long grasses. (D) Signup and view all the answers