Select the plant behavior that arises from internal stimuli.
A. thigmotropism
B. phototropism
C. nondevelopmental formation of aerenchyma
D. cytokinins promoting cell division
Answer: D
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A PrPc protein can convert a PrPSc to a PrPc.
Answer the following statement true (T) or false (F)
What type of mollusk has a closed circulatory system?
A. clam B. snail C. squid D. slug E. scallop
Sudan IV, a dye that binds to nonpolar molecules, is used to detect the presence of macromolecules in food. Sudan IV would test positive in the presence of what macromolecule?
A. Starch B. DNA C. Fats D. Hemoglobin E. Chitin
Place the following events that occur at the vertebrate neuromuscular junction in the correct order.IDepolarization of the muscle fiber membrane.IIGeneration of an action potential in the neuron.IIIStimulation of Ca2+ entry into the neuron.IVRelease of acetylcholine into the synapse.
A. IV, II,III, I B. III, II, IV, I C. I, III, IV, II D. I, II, III, IV E. II, III, IV, I