what is the meaning of the word pathogens as it is used in the first paragraph

HESI A2

HESI A2 Reading Comprehension V1 2024

1. What is the meaning of the word 'pathogens' as it is used in the first paragraph?

A. diseases
B. vaccines
C. disease-causing substances
D. foods

Correct answer: C

Rationale: In the context provided, 'pathogens' refers to disease-causing substances such as bacteria and viruses. These microorganisms can contaminate food and lead to foodborne illnesses. Choice A ('diseases') is incorrect as pathogens themselves cause diseases but are not diseases. Choice B ('vaccines') is incorrect as vaccines are used to prevent diseases caused by pathogens. Choice D ('foods') is incorrect as pathogens are not foods, but rather contaminants that can be found in food.

2. What conclusion can be drawn from the article on Eating?

A. The author thinks chopsticks are funny.
B. Space flight is fun and exciting.
C. The author enjoys trying new food.
D. Diversity is interesting to learn about.

Correct answer: D

Rationale: The correct answer is D. The author highlights cultural diversity and the variety of eating habits in the article. The passage discusses the different eating methods developed by various cultures, such as cutlery in European cultures and chopsticks in China. It emphasizes the interest in discovering these cultural differences and learning new ways of doing things, showcasing the importance of diversity. Choices A, B, and C are incorrect as they do not align with the main focus of the article, which is cultural diversity and eating habits, rather than the author's opinion on chopsticks, space flight, or personal food preferences.

3. What is the overall tone of the essay about A Short History of the CDC?

A. Appreciative.
B. Awestruck.
C. Somber.
D. Disheartened.

Correct answer: A

Rationale: The tone of the essay is appreciative, reflecting a recognition of the CDC's historical contributions to public health. The passage highlights the organization's evolution and its significant impact on disease control and prevention, suggesting a positive and respectful view of its work over the years, making A the correct choice.

4. Which statement is not a detail from the passage?

A. Condensation fails to happen when water vapor cools and changes back into droplets of liquid
B. Evaporation happens when water changes into gas
C. The water cycle does not involve precipitation
D. Water evaporates from oceans and rivers

Correct answer: C

Rationale: Choice C, 'The water cycle does not involve precipitation,' is not a detail from the passage. The passage clearly states that precipitation, such as rain, snow, sleet, or hail, is a crucial part of the water cycle. On the other hand, choices A, B, and D are all supported by the passage. Condensation occurs when water vapor cools, evaporation occurs when water changes into gas, and water evaporates from oceans and rivers are all mentioned in the text.