Thyroid hormone receptors form a(n) ________ on their DNA half-sites.
A. heterodimer
B. autodimer
C. homodimer
D. pseudodimer
Answer: A
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Which of the following is a true difference between electrical and chemical synapses?
A) Electrical synapses are found in the central nervous system. B) Electrical synapses are the most common type of synapse. C) Electrical synapses typically send information in one direction (presynaptic cell to postsynaptic cell). D) Electrical synapses are much faster.
What is the significance of the "C-shaped" cartilages that reinforce the tracheal rings?
A) The incomplete portion of the C-shaped cartilages are located at the posterior of the tracheal cartilages, to permit the esophagus to bulge anteriorly into the tracheal lumen in transient fashion to permit a large bolus to pass. B) The open region permits passage of the nerves that stimulate the muscles of the laryngeal region. C) They form a solid cartilaginous tube. D) These cartilages hold the trachea rigidly open at the same diameter at all times. E) None of the answers are correct.
Temperature stabilization is dependent upon which properties of water?
a. cohesion and adhesion b. capillary action and adhesion c. specific heat and heat of vaporization d. cohesion and specific heat
According to Boyle's law, the pressure exerted by a constant number of gas molecules in a container is inversely proportional to the volume of the container. Therefore, increasing the volume of the container will cause a decrease in its pressure
Indicate whether the statement is true or false.