The final by-products of many condensation
reactions are
a. carbon dioxide molecules.
b. hydrogen ions.
c. hydroxyl ions.
d. oxygen gas and hydrogen gas.
e. water molecules.
Answer: e
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A conservation group has established a new sanctuary for an endangered species of rabbit. What are the ideal characteristics of this sanctuary?
A. The sanctuary is large enough to support a growing number of rabbits. B. The sanctuary is located in close proximity to another local rabbit population. C. The sanctuary is seeded with enough rabbits so that they can easily find mates. D. The sanctuary is not populated by rabbit predators. E. All of the answer options are correct. F. None of the answer options is correct.
Transmission genetics ____
a. studies the pattern of inheritance as traits are passed from generation to generation b. reconstructs the pattern of inheritance associated with a trait as it passes through several generations c. maps genes to study chromosome structure and abnormalities in chromosome numbers and organization d. uses recombinant DNA technology to identify, isolate, and produce millions of copies of genes that can be studied in the laboratory e. sequences the complete human genome
Explain how Vibrio cholerae causes cholera without apparent damage to the intestinal epithelium
A. This microbe causes destruction of the cellular structures underneath the intestinal epithelium-this is what induces the watery rice-stool characteristic of the illness. This leaves the overlying intestinal epithelium intact. B. This microbe directly invades the intestinal epithelial cells, but does not kill them. Instead, while multiplying inside them, it causes them to secrete large amounts of chloride ions. This induces water to follow by osmosis, resulting in the watery rice-stool characteristic of the illness. C. This microbe attaches to the surface of intestinal epithelial cells, secreting an exotoxin that causes the epithelium to secrete large amounts of chloride ions. This induces large amounts of water to follow by osmosis, resulting in the watery rice-stool characteristic of the illness. D. The inflammatory reaction to the presence of this microbe causes the watery rice-stool characteristic of the illness. Therefore, it's technically the immune response that initiates the disease, although this response is induced by the presence of the microbe on the intestinal epithelium.
Dinoflagellates that exist endosymbiotically within a variety of marine invertebrates are called
A. parasites. B. endotrophic. C. endoflagellates. D. zooxanthellae.