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Questions and Answers
Questions and Answers
Which of the following is NOT a way in which normal microbiota contribute to the body's defense?
Which of the following is NOT a way in which normal microbiota contribute to the body's defense?
- Aiding in digestion and absorption of food
- Producing toxins that harm the body (correct)
- Competing for nutrients
- Altering the pH of the environment
Which of the following is a normal resident of the skin?
Which of the following is a normal resident of the skin?
- Staphylococcus epidermidis (correct)
- Salmonella typhimurium
- Bacillus cereus
- Escherichia coli
What is the main component responsible for destroying most bacteria in gastric juice?
What is the main component responsible for destroying most bacteria in gastric juice?
- Enzymes
- pH alteration
- HCl (hydrochloric acid) (correct)
- Mucus
Which type of immunity is present at birth and does not involve specific recognition of microbes?
Which type of immunity is present at birth and does not involve specific recognition of microbes?
Which type of immunity involves specific cells recognizing foreign substances and reacting by producing specific proteins?
Which type of immunity involves specific cells recognizing foreign substances and reacting by producing specific proteins?
Which type of immunity is acquired through receiving antibodies from another source rather than producing them within the body?
Which type of immunity is acquired through receiving antibodies from another source rather than producing them within the body?
Which type of immune cell is responsible for engulfing and destroying pathogens in the body?
Which type of immune cell is responsible for engulfing and destroying pathogens in the body?
What is the main component of blood that plays a role in cellular defenses as part of the second line of defense?
What is the main component of blood that plays a role in cellular defenses as part of the second line of defense?
Which cells are NOT part of the formed elements in blood?
Which cells are NOT part of the formed elements in blood?
What type of immunity involves being cured from a disease or receiving a vaccination?
What type of immunity involves being cured from a disease or receiving a vaccination?
Which structure in the respiratory tract helps clear microbes in mucus out of the respiratory tract?
Which structure in the respiratory tract helps clear microbes in mucus out of the respiratory tract?
Which substance, found in most body secretions, breaks down peptidoglycan cell walls?
Which substance, found in most body secretions, breaks down peptidoglycan cell walls?
Which substance, produced by the lacrimal apparatus, washes microbes off the eye?
Which substance, produced by the lacrimal apparatus, washes microbes off the eye?
Which type of epithelium is less protective than keratinized epithelium?
Which type of epithelium is less protective than keratinized epithelium?
Which substance, found in skin, has an acidic pH that inhibits microbe growth?
Which substance, found in skin, has an acidic pH that inhibits microbe growth?
Which structure in the respiratory tract is lined with ciliated epithelium and beats in a wave motion to clear microbes in mucus?
Which structure in the respiratory tract is lined with ciliated epithelium and beats in a wave motion to clear microbes in mucus?
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