A(n) ____ species resides where it evolved, and is found nowhere else on Earth
a. invasive
b. endemic
c. endangered
d. exotic
e. persistent
ANSWER: b
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Suppose a cell's membrane is permeable to water, but not to Na+ or Cl? or any other solute. The NaCl concentration is
higher outside the cell than inside the cell, and the osmolarity of the cell is higher than that of the solution surrounding the cell. What will occur?
a. Overall, the cell will lose water. b. Overall, the cell will take up water, Na+, and Cl?. c. Overall, the cell will take up water. d. Overall, the cell will take up water and lose Na+ and Cl?. e. Overall, the cell will lose water and take up Na+ and Cl?.
Respond to statements 91–95 in reference to the five kinds of
species interactions listed below. a. competition b. parasitoidism c. mutualism d. commensalism e. parasitism E 91. The relationship between a dog and a wood tick is this. M 92. The interaction between a human and the intestinal bacterium E. coli is usually this. M 93. The interaction between two closely related species of woodpeckers that live in a temperate forest is likely to be this. M 94. If a wasp lays its eggs inside the larva of a fly, the interaction is this. M 95. When a tropical bird places its nest in association with a wasp nest on the same tree, the interaction is this.
Which of the following applications of biotechnology results in an insect-resistant plant?
A) Banana-based vaccine against pathogenic Escherichia coli B) Insulin production by bacteria C) Bt toxin production by soybeans D) Growth-hormone-treated cows E) Herbicide-resistant corn
The formal definition of ‘fitness' in evolutionary biology:
a. pertains to reproductive success. b. implies something is well matched or fit. c. Both of the above. d. Neither of the above.