To see gradual variations in shading, we rely on cells that respond best to ___ but to see abrupt changes in light versus dark, we rely on cells that respond best to ___.
a. low frequency stimuli; sine wave gratings
b. high frequency stimuli; low frequency stimuli
c. sine wave gratings; Mach bands
d. low frequency stimuli; high frequency stimuli
Question 2
During LTP, the first few pulses of glutamate:
a. Dislodge the magnesium ions from the NMDA receptor
b. Allow sodium and calcium ions to enter
c. Increase the likelihood the neuron will fire, and increase the number and sensitivity of AMPA receptors
d. All of the above
The structure of stomatal guard cells affects their function.
Growth of yeast cells in culture fits the logistic growth model.
whitefish blastula cells
The metabolic activity of mammalian cells
Ragged-red fibers in skeletal muscle cells
Cytokinesis in animal cells (a) and plant cells (b)