The osculum of a sponge is entirely blocked by a fungal infection. Predict what will happen.
A. Water will be unable to enter the sponge.
B. Choanocytes will no longer be able to function.
C. Digestion will be prevented from occurring.
D. The flow of water out of the sponge will decrease.
D. The flow of water out of the sponge will decrease.
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Desensitization of a cell to a ligand may involve all of the following except
A) destruction of the ligand. B) a lessened response to the ligand. C) receptor down-regulation. D) receptor-mediated endocytosis. E) lowered affinity of a receptor for the ligand.
Hiv
A. appears to cause AIDS. B. is an RNA virus. C. destroys T helper cells. D. makes the patient vulnerable to infections, especially those caused by opportunists. E. All of the choices are correct.
A high concentration of chlorophyll imbedded in the plasma membrane fold of a newly discovered species of bacteria suggests a:
A. Photoheterotrophic metabolism B. Photoautotrophic metabolism C. Chemoheterotrophic metabolism D. Chemolithoautotrophic metabolism
Dr. Webber joined the Gelder Medical Group, which was a medical partnership. Part of the agreement was that if for any reason his association with the group ended, he would not practice medicine for five years within 30 miles of the Village of Sidney, where the partnership was located. The agreement also provided that any member could be required to withdraw from the partnership upon a majority vote of the other members. Dr. Webber’s work with the group turned out to be unsatisfactory to his partners, who felt he was an embarrassment to the group. Dr. Webber refused to withdraw from the association after he was terminated by the other physicians. Two months later, despite his earlier agreement, Dr. Webber opened a medical office in Sidney. The partnership brought suit to prevent him
from carrying on his practice. Could they do this successfully?