MCAT Behavioral Sciences Question 20: Answer and Explanation
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Question: 20
5. Which part of the eye is responsible for gathering and focusing light?
- A. Cornea
- B. Pupil
- C. Iris
- D. Retina
Correct Answer: A
Explanation:
The cornea is responsible for gathering and focusing light. The iris and pupil, choices (B) and (C), are both involved in regulating the amount of light coming into the eye but not in focusing it. The retina, choice (D), transduces the light into electrical signals that are sent to the brain. The lens serves a similar function to the cornea and would also be a valid answer to this question.