A trip to space finds a planet rich with green light. Scientists hope to introduce photosynthetic
organsims to this planet. What sort of organism should they choose? What will be an ideal response?
This would be difficult, but a plant rich in phycoerythrobilin might work as that pigment is able to
absorb green light.
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The pain produced in an internal organ may be perceived as occurring somewhere else. This phenomenon is called
____. a. mixed nerve messages b. referred pain c. phantom pain d. psychosomatic pain e. hypochondria
Most sensory systems involve
a. sensory neurons. b. specific nerve pathways. c. specialized brain regions. d. sensory neurons and specialized brain regions. e. all of the above.
________ improved the original light microscope in the late 1600s, allowing the visualization of ________
A) Theodor Schwann; the internal structures of cells, such as ribosomes, nuclei, and golgi bodies B) Robert Hooke; bacteria and viruses C) Antonie van Leeuwenhoek; sperm cells, bacteria, algae, and other protists D) Robert Brown; cell structures using fluorescent antibodies E) Rudolf Virchow; collagen and muscle cells
Sensilla are sensory hairs involved in taste and smell
____________________ Indicate whether the statement is true or false.