Question 1

Which of the following best describes the term 'etiology' in the context of disease?

Accepted Answer

The study of the factors that cause a disease.

Question 2

A disease that is native to a local region and consistently present in that population is best described as:

Accepted Answer

Endemic

Question 3

Which of the following is NOT a basic mechanism of disease?

Accepted Answer

Nutritional mechanisms

Question 4

Which of the following risk factors for disease is most likely to be modifiable through lifestyle changes?

Accepted Answer

Lifestyle

Question 5

Which of the following statements about viruses is TRUE?

Accepted Answer

They are microscopic, intracellular parasites that consist of a nucleic acid core with a protein coat.

Question 6

Which of the following best describes prions?

Accepted Answer

Pathogenic protein molecules that convert normal proteins to abnormal forms.

Question 7

A patient is diagnosed with a Gram-positive, rod-shaped bacterial infection. Which classification best fits this organism?

Accepted Answer

Bacilli

Question 8

Which of the following is a characteristic of fungi that distinguishes them from plants?

Accepted Answer

They lack chlorophyll.

Question 9

Which group of protozoa is characterized by the presence of pseudopodia?

Accepted Answer

Amebas

Question 10

Which of the following is an example of a vector in disease transmission?

Accepted Answer

Mosquito

Question 11

A patient presents with a localized, non-spreading tumor in the glandular tissue. Which term best describes this tumor?

Accepted Answer

Adenoma

Question 12

Which of the following is a key difference between benign and malignant tumors?

Accepted Answer

Malignant tumors can metastasize, while benign tumors remain localized.

Question 13

Which of the following is a common sign of the inflammatory response?

Accepted Answer

Redness, heat, swelling, and pain

Question 14

Which of the following mediators is NOT typically involved in the inflammatory response?

Accepted Answer

Insulin

Question 15

A patient develops a fever as part of a systemic inflammatory response. What is the physiological benefit of this fever?

Accepted Answer

It helps destroy pathogens and enhances immunity.

Question 16

Which of the following best describes the process of metastasis?

Accepted Answer

Cancer cells leave the primary tumor and start a secondary tumor at a new location.

Question 17

Which of the following is a plausible reason why antibiotic resistance is a growing concern in medicine?

Accepted Answer

Bacteria can evolve mechanisms to survive exposure to antibiotics.

Question 18

A patient is diagnosed with a cancer of the bone marrow. Which term best describes this condition?

Accepted Answer

Myeloma

Question 19

Which of the following is a primary method for detecting cancer in its early stages?

Accepted Answer

Self-examination and diagnostic imaging

Question 20

Which of the following equations best represents the relationship between the number of new cases (I), the population at risk (N), and the incidence rate (IR) in epidemiology?

Accepted Answer

$$ IR = \frac{I}{N} $$

Mechanisms of Disease: Pathogenic Organisms, Cancer, and Inflammation

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