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Toxins: Exotoxins and Endotoxins

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Questions and Answers

What is the primary function of membrane-damaging toxins such as streptolysin O?

To trigger an immune response
To form pores in membranes (correct)
To inhibit protein synthesis
To hydrolyze phospholipids of membrane

What is the primary function of phospholipases?

To form pores in membranes
To trigger an immune response
To hydrolyze phospholipids of membrane (correct)
To inhibit protein synthesis

What is the primary function of exfoliatin from Staphylococcus aureus?

To lyse red blood cells
To destroy material that binds together skin layers (correct)
To trigger an immune response
To destroy connective tissue

What is the primary function of endotoxin?

To trigger an inflammatory response (A) Signup and view all the answers

What is a characteristic of exotoxins?

They are protein toxins (C) Signup and view all the answers

What is a potential consequence of the immune response?

Inflammation leading to tissue damage (A) Signup and view all the answers

What type of toxins are produced by GRAM+ bacteria?

Exotoxins (D) Signup and view all the answers

What is the main difference between A-B toxins and Membrane Damaging Toxins?

The mechanism of action (A) Signup and view all the answers

What is the result of bacterial lysis in relation to exotoxins?

Exotoxins are secreted or leak into tissue (D) Signup and view all the answers

What is the characteristic of Neurotoxins?

They damage the nervous system (C) Signup and view all the answers

What is the effect of antibodies on A-B toxins?

They have no effect on A-B toxins (C) Signup and view all the answers

What is the name of the bacteria that produces exotoxins that cause tetanus?

Clostridium tetani (A) Signup and view all the answers

What is the primary mechanism by which Mycobacterium tuberculosis causes disease?

Invading host tissues and producing toxins (B) Signup and view all the answers

What is toxigenicity?

The ability of bacteria to form toxins (B) Signup and view all the answers

Which of the following bacteria is responsible for producing toxins that are ingested through contaminated food?

Clostridium botulinum (C) Signup and view all the answers

What is the primary mechanism by which Vibrio cholera causes disease?

Colonizing mucous membranes and producing toxins (B) Signup and view all the answers