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1 September, 03:42

When fewer visual pigment molecules are available to absorb light (for example, when a person has a color weakness), which of the following nervous system responses occurs? A. Fewer signals of the weakly perceived color are sent to the brain. B. A normal number of signals of the weakly perceived color is sent to the brain, but each signal is less intense. C. The signals for the weakly perceived color are sent to the brain via other, more plentiful, pigments. D. Light molecules stimulate the cells to make additional pigment.

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  1. 1 September, 04:11
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    A. Fewer signals of the weakly perceived color are sent to the brain.

    Explanation: the brain is the seat of nervous coordination where nerve cells sends signals for processing. An individual with a weak color means a fewer signal for color production is sent to the brain this is due to low pigment it had hence fewer pigment molecule are available to absorb light. If the pigment is high the signal sent will also be high.
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