Which of the following receive(s) a physical or chemical stimulus and ultimately cause(s) nerve impulses to be generated in sensory neurons?
A) the brain
B) axons
C) Schwann cells
D) hillocks
E) receptors
E
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C3 plants are more susceptible to photorespiration than either C4 or CAM plants, so why do most
plants lack the C4 pathway?
a. Rubisco is more efficient in C3 plants when compared to rubisco C4 and CAM plants. b. Photorespiration is not a serious problem for most plants. c. Most plant species do not have vacuoles in their cells to store the malate generated from CO2 taken in during the night. d. There is an energetic cost to C4 and CAM pathways that only makes them advantageous in very hot and/or arid environments. e. Switching between C3, C4, and CAM photosynthesis is very difficult for most plants.
When one species actively prevents another from accessing a resource, it is called:
a. interference competition b. exploitative competition c. scavenging d. interspecific competition e. predation
What was the purpose of the IQ test developed by Alfred Binet?
A) to measure intelligence based on the most accepted theory of the time B) to compare the intelligence of different cultural subpopulations in the general population C) to determine the relative effects of genes and environment on intelligence D) to identify school children in need of remedial help
Which of the following is the MOST accurate description of Endotoxins?
A. They are lipopolysaccharides located in the outer membrane of gram-positive bacteria only B. They are lipopolysaccharides located in the outer membrane of gram-negative bacteria only C. Highly antigenic, induce antitoxins, and do form toxoids D. Many have A-B subunit structure in which A subunit is the active one and the B unit is the one that binds into the cell E. They are polypeptides secreted by certain bacteria that alter cell functions resulting in symptoms of disease