What do synaptic signaling and paracrine signaling have in common?
A. Cells release a signal that affects cells at long distances.
B. Cells release a signal through gap junctions to affect neighboring cells.
C. Cells release a signal that affects it and neighboring cells.
D. Cells release a signal that affects neighboring cells.
E. Cells bind a membrane bound signal on a neighboring cell.
D. Cells release a signal that affects neighboring cells.
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Greenhouse gases include ____
a. carbon dioxide, water, nitrogen, and hydrogen b. carbon dioxide, water, methane, ozone, and nitrous oxide c. carbon dioxide, phosphorous, water, and ozone d. carbon dioxide, methane, and carbon monoxide e. carbon dioxide, ozone, nitrous oxide, and phosphorous
Sponges are considered:
a. animals. b. plants. c. fungi. d. bacteria. e. Archaea.
The job of the placenta is primarily associated with
A. nourishment and waste removal. B. separation of the layers of embryonic tissue. C. protection of the fetus from infection. D. development of the outermost tissue of the embryo.
Two bacterial strains have the same genes for metabolizing a carbohydrate, but one is wild-type for a regulatory inducer while the other does not produce the inducer. Which of the following statements is CORRECT with regard to the metabolism of the
bacteria? A) The two bacterial strains have the same phenotype. B) The two bacterial strains have different phenotypes. C) The genotypes and phenotypes of the two bacterial strains are the same. D) The two bacterial strains have the same phenotype but have different genotypes. E) The answer cannot be determined from the information provided.