ati teas 7 science

Correct Answer: B

Rationale: Step 1: Active immunity involves the body's immune response, meaning the body produces its own antibodies after exposure to a pathogen. Step 2: Passive immunity provides immediate protection through antibodies from an external source, such as maternal antibodies or antibody injections. Step 3: The key difference lies in the origin of the antibodies - body's own immune response (active) vs. external antibodies (passive). Step 4: Choice B correctly identifies this distinction, making it the correct answer. Summary: Choices A, C, and D are incorrect as they do not accurately differentiate between active and passive immunity and provide misleading information about the duration, protection spectrum, and vaccination requirements.

Correct Answer: C

Rationale: The correct answer is C: Ecology. Ecology is the scientific study of the relationships between organisms and their environment. It focuses on the interactions between living organisms and their surroundings. Zoology (A) is the study of animals, Botany (B) is the study of plants, and Genetics (D) is the study of genes and heredity, which are not directly related to the relationships between organisms and their environment. Therefore, Ecology is the most appropriate choice for this question.

Correct Answer: B

Rationale: The correct answer is B because it demonstrates a single displacement reaction where zinc (Zn) displaces hydrogen (H) in hydrochloric acid (HCl) to form zinc chloride (ZnCl2) and hydrogen gas (H2). This is evident from the activity series where Zn is more reactive than H. A, C, and D are not examples of single displacement reactions. A represents a synthesis reaction where hydrogen and oxygen combine to form water. C represents a decomposition reaction where calcium carbonate breaks down into calcium oxide and carbon dioxide. D represents a combustion reaction where methane reacts with oxygen to form carbon dioxide and water.

Correct Answer: A

Rationale: The correct answer is A: Stapes. The stapes is the smallest bone in the human body, located in the middle ear. It plays a crucial role in transmitting sound vibrations to the inner ear. The other choices are incorrect because the patella is a knee bone, phalanges are finger bones, and ribs are chest bones, none of which are the smallest bone in the body. The stapes' small size and specific location make it uniquely suited for its function in hearing.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.