What is the summing up of the excitatory and inhibitory signals by a neuron called?
A. firing
B. polarization
C. addition
D. depolarization
E. integration
Answer: E
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Where did Earth's atmosphere originate?
a. Earth's gravity trapped gasses from passing comets. b. Gases were released from the Earth itself as it cooled. c. The atmosphere was derived from dust particles from the original gas cloud around the planet. d. Earth’s gravity trapped gasses from passing comets, gases were released from the Earth itself as it cooled, and the atmosphere was derived from dust particles from the original gas cloud around the planet. e. Gases were released from the Earth itself as it cooled and the atmosphere was derived from dust particles from the original gas cloud around the planet.
How do plants benefit from a mycorrhizal partnership with a soil fungus?
a. the fungus provides sugars b. the fungus participates in photosynthesis c. they provide digestive enzymes d. they increase the absorptive surface area of the plant and provide water and nutrients e. the protect the plant from pathogens
The Gardasil HPV vaccine consists of ____
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When an ionic compound such as sodium chloride (NaCl) is placed in water, the component atoms of the NaCl crystal dissociate into individual sodium ions (Na+) and chloride ions (Cl-). In contrast, the atoms of covalently bonded molecules (e.g
, glucose, sucrose, glycerol) do not generally dissociate when placed in aqueous solution. Which of the following solutions would be expected to contain the greatest number of solute particles (molecules or ions)? A) 1 liter of 0.5 M NaCl B) 1 liter of 1.0 M NaCl C) 1 liter of 1.0 M glucose D) 1 liter of 1.0 M NaCl and 1 liter of 1.0 M glucose will contain equal numbers of solute particles.