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Question 1:

Which theory of color vision suggests that color perception is based on the activation of three types of cone cells?

A) Trichromatic Theory
B) Opponent Process Theory
C) Young-Helmholtz Theory
D) Retinex Theory

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Explanation: The correct answer is A) Trichromatic Theory. The Trichromatic Theory, also known as the Young-Helmholtz Theory, suggests that color vision is based on the activation of three types of cone cells in the retina: red, green, and blue. Different combinations of activation in these cones are responsible for our perception of different colors.

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Question 2:

According to the opponent process theory, how are the colors red and green perceived?

A) As opponent colors
B) As complementary colors
C) As primary colors
D) As secondary colors

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Explanation: The correct answer is A) As opponent colors. According to the opponent process theory, the colors red and green are perceived as opponent colors. This means that they are perceived as opposite to each other, and they cannot be experienced simultaneously. The theory suggests that our visual system processes color information in three opponent channels: red-green, blue-yellow, and black-white.

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Question 3:

Which theory proposes that there are three opponent color channels in the visual system?

A) Trichromatic Theory
B) Opponent Process Theory
C) Young-Helmholtz Theory
D) Retinex Theory

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Explanation: The correct answer is B) Opponent Process Theory. The Opponent Process Theory proposes that there are three opponent color channels in the visual system: red-green, blue-yellow, and black-white. This theory suggests that our perception of color is based on the relative activation and inhibition of these opponent channels.

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Question 4:

According to the trichromatic theory, what happens when all three types of cones are equally stimulated?

A) We perceive white
B) We perceive black
C) We perceive gray
D) We perceive the color magenta

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Explanation: The correct answer is A) We perceive white. According to the trichromatic theory, when all three types of cones in the retina are equally stimulated, we perceive the color white. This is because white light contains a combination of all visible wavelengths, which stimulates all three types of cones in a balanced manner.

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Question 5:

The Retinex Theoryproposes that color perception is influenced by:

A) The surrounding context and the relative intensities of light
B) The activation of specific cone cells in the retina
C) The opponent color channels in the visual system
D) The three primary colors of light

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Explanation: The correct answer is A) The surrounding context and the relative intensities of light. The Retinex Theory proposes that color perception is influenced by the surrounding context and the relative intensities of light. According to this theory, the visual system compares the light reflected from a particular object with the light reflected from its surrounding environment to determine the color perception of the object.