The theory of evolution asserts which of the following?
a. Evolution identifies the origin of life.
b. Only populations can evolve.
c. Evolution is goal directed.
d. Only individuals can evolve.
b. Only populations can evolve.
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The ascending portion of the loop of Henle is
A. permeable to water and impermeable to sodium. B. permeable to water and permeable to sodium. C. impermeable to water and permeable to sodium. D. impermeable to water and impermeable to sodium. E. the site of active transport of water.
Which of the following is a technique for rapidly replicating copies of regions of DNA?
a. cloning b. polymerase chain reaction (PCR) c. gel electrophoresis d. recombinant DNA
A type III survivorship curve is characteristic of ____
a. dogs b. goats c. hawks d. clams e. horses
Explain how dissolved sugar is transported in the phloem by means of a pressure gradient. What will be an ideal response?