Microbiology Lab Techniques

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What is the primary function of flagella in bacterial cells?

Adherence and transfer of genetic material

Locomotion (correct)

Formation of bacterial spores

Protection from dehydration

What is the purpose of a bacterial capsule?

To facilitate locomotion

To adhere to other cells

To transfer genetic material

To protect from dehydration and evade the host's immune system (correct)

What is the most common method used for the removal of microorganisms?

Chemical agents

Autoclave

Application of heat (correct)

Desiccation

What is the term for the removal or destruction of all forms of life, including bacterial spores?

Sterilization Signup and view all the answers

What is the primary function of a hot plate in a laboratory setting?

To heat solutions and materials uniformly without the danger of an open flame Signup and view all the answers

What is the purpose of Bacillus stearothermophilus in autoclave quality control?

To ensure proper sterilization Signup and view all the answers

What is the primary purpose of the results from this test?

To determine which drugs are likely to be most effective in treating a person's infection Signup and view all the answers

What does a Susceptible result indicate about a bacterial strain?

It is inhibited by a concentration of the antibiotic associated with a high likelihood of therapeutic success Signup and view all the answers

What is the mechanism of action of penicillin?

It binds to the beta-lactam ring to inhibit DD-transpeptidase Signup and view all the answers

What is the consequence of a bacterial strain being resistant to an antibiotic?

The antibiotic will have no effect Signup and view all the answers

What is a common side effect of penicillin?

Stomach ache Signup and view all the answers

What is the outcome of penicillin's action on bacterial cell walls?

The cell walls are destroyed Signup and view all the answers

What is the term for strong chemicals used to disinfect inanimate objects?

Disinfectant Signup and view all the answers

What is the process of reducing or inhibiting the growth of microorganisms on living tissue?

Antiseptic Signup and view all the answers

What is the term for the presence of pathogens in the blood and tissues?

Sepsis Signup and view all the answers

What type of chemicals denature protein and inhibit enzymatic activity?

Heavy metals Signup and view all the answers

What is the collective term for physical and chemical killing of microorganisms?

Chemical sterilization Signup and view all the answers

What type of agent is used in facial washes and soaps to reduce surface tension?

Surfactants Signup and view all the answers

What is the causative agent of Pityriasis versicolor?

Malassezia furfur Signup and view all the answers

Which of the following diseases is caused by Candida albicans?

Candidiasis Signup and view all the answers

What is the name of the disease caused by Histoplasma capsulatum?

Histoplasmosis Signup and view all the answers

Which of the following is a subcutaneous fungal infection?

Sporotrichosis Signup and view all the answers

What is the causative agent of Black piedra?

Piedraia hortae Signup and view all the answers

What is the name of the disease caused by Blastomyces dermatitidis?

Blastomycosis Signup and view all the answers

What is the mechanism of action of penicillin on bacteria?

Inhibiting cell wall synthesis Signup and view all the answers

What is the function of cerumen in the auditory canal?

To protect the auditory canals from infection Signup and view all the answers

What is the term for the body's ability to resist infection without prior exposure?

Innate immunity Signup and view all the answers

What is the role of basophils in the immune response?

To trigger allergic reactions Signup and view all the answers

What is the pH of the skin, which helps to defend against infection?

pH 5.6 Signup and view all the answers

What is the term for diseases that occur when the body's immune system mistakenly attacks its own cells?

Autoimmune diseases Signup and view all the answers