ati teas 7 science

Correct Answer: A

Rationale: The correct answer is A: Femur (thigh bone). The femur is the largest bone in the human body, providing structural support and mobility for the lower body. It is located in the thigh region and is crucial for walking, running, and overall movement. The other choices, B: Tibia, C: Humerus, and D: Scapula, are all significant bones in the body, but they are not as large as the femur. The tibia is the second largest bone but is smaller than the femur. The humerus is in the upper arm, and the scapula is in the shoulder, so they are not as large as the femur which is in the lower body and bears more weight.

Correct Answer: B

Rationale: The correct answer is B: Ammonia (NH₃). Ammonia is a common base found in household products due to its ability to accept protons and increase the pH of solutions. It is commonly used in cleaning products such as glass cleaners and floor cleaners. A: Sodium chloride (NaCl) is a salt and not a base. C: Vinegar is acidic due to the presence of acetic acid. D: Lemon juice is also acidic due to the presence of citric acid. Therefore, B is the correct answer as it is a common base found in household products, while the other choices are either salts or acidic substances.

Correct Answer: C

Rationale: The correct answer is C: Emulsify fats. Bile helps emulsify fats by breaking them down into smaller droplets, increasing the surface area for enzymes to digest fats. This aids in the absorption of fats and fat-soluble vitamins in the small intestine. Choice A is incorrect because bile does not break down carbohydrates. Choice B is incorrect as bile does not break down proteins. Choice D is incorrect because bile does not neutralize stomach acid; rather, it helps with fat digestion in the small intestine.

Correct Answer: C

Rationale: Failed to generate a rationale after 5 retries.

Correct Answer: A

Rationale: Failed to generate a rationale after 5 retries.