Which brain region is most likely to contribute to the establishment of motor memory, the ability to perform complex
motor skills?
a. frontal cortex
b. cerebellum
c. hypothalamus
d. amygdala
e. brain stem
ANSWER: b
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In the process of quorum sensing, bacteria release signaling molecules in ____ concentrations as cell density ____
a. increasing; decreases b. increasing; increases c. decreasing; increases d. decreasing; decreases e. constant; increases
The ER is contiguous with the nuclear envelope
a. true b. false
Which of the following best describes advantages conferred by compound leaves versus simple leaves?
a. There's a greater chance of capturing photons in intermittently shady areas. b. There is less chance of damage in high-wind areas. c. There's a reduced chance of herbivory. d. There is less surface area for water loss. e. There's a greater chance of capturing photons in intermittently shady areas and less chance of damage in high-wind areas.
You have fused a mouse cell and a human cell and then treated the cell with specific antibodies that are covalently linked to fluorescent dyes (antibodies to mouse proteins - green; antibodies to human proteins - red). What does the cell look like immediately after fusion?
a) the red and green labels are uniformly distributed across the entire membrane b) the cell is half red and half green c) the red and green labels are distributed in intermingled patches d) the cell appears to be brown in color e) the cells appears to be yellow in color