ABO NOCE Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which type of photoreceptor is responsible for processing color?

Rods

Cones

The correct response highlights the role of cones in the visual system, specifically their function in color processing. Cones are photoreceptors located in the retina that are sensitive to different wavelengths of light, allowing them to detect and interpret color. There are three types of cones, each sensitive to different primary colors—red, green, and blue—which together enable the perception of a wide spectrum of colors through a process called color vision.

Other options do not have the same role in color processing: rods are responsible for vision in low light conditions and do not contribute to color perception, while bipolar and ganglion cells are involved in transmitting signals from photoreceptors to the brain but do not directly process color information. Their primary roles focus on the processing and relay of visual information rather than on color detection itself.

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Bipolar cells

Ganglion cells

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