Topics: Eye in Color Vision Quiz
What does the opponent-process theory suggest about color vision?
A. Colors are perceived through the photoreceptive cones only
B. Colors are perceived through a system that uses opposing colors
C. Only one type of cone is activated at a time
D. Colors are not processed in the brain
Select your answer:

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Medical Terminology Prefixes AEMT EMS Systems Enzymes and Metabolic Pathways Body Systems Pollution Circulatory & Respiratory Degeneration Pathology Disabilities Healthy Living Infectious Disease and Pathogens Vision and Light Body Fluids Pediatric Musculoskeletal Disorders Pain Management PathogensOther quiz:
Biotechnology › ViewWhat is the role of dendritic cells in the immune system?
A. Important in the elimination of parasites
B. Important antigen-presenting cell to naive TH cells
C. Circulating cell that releases mediators such as histamine
D. Phagocytic tissue cell that is a component of the body’s first cellular line of defense
Organ Systems › View
The kidneys, bladder and ureter are part of your ___________ system.
A. nervous
B. excretory
C. muscular
D. digestive