Which of the following conducting cells are associated with xylem?
A. sieve-tube members & vessel elements
B. vessel elements & companion cells
C. tracheids & sieve-tube members
D. tracheids & vessel elements
E. sieve-tube members & companion cells
Answer: D
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What was the major contribution of Gregor Mendel?
a. He coined the term genes. b. He provided evidence for how traits are inherited. c. He described how genes code for particular proteins. d. He explained the central role of proteins in the expression of traits.
Conservation efforts using ____ are being used to protect the critically endangered Florida panther by allowing the
animals to move safely between fragmented conservation areas
a. landscape corridors b. ecotourism c. beta-diversity d. population viability analyses e. introduction of nonnative prey species
Choose the most correct statement about the two phases of photosynthesis
a. The light-dependent reactions occur in the cytosol; the light-independent reactions occur in the stroma. b. The products of the light-dependent reactions are ATP, NADPH, and O2; the products of the light-independent reactions are ADP, NADP+, and sugar. c. The light-dependent reactions occur during the daylight hours; the light-independent reactions occur when it is dark. d. The light-dependent reactions produce water as a by-product; the light-independent reactions produce carbon dioxide as a waste product. e. The products of the light-dependent reactions are ADP, NADP+, and O2; the products of the light-independent reactions are ATP, NADPH, and sugar.
Which of the following statements best describes what happens when a bacterial cell is placed in a solution containing 5% NaCl?
A) Sucrose will move into the cell from a higher to a lower concentration. B) The cell will undergo osmotic lysis. C) Water will move out of the cell. D) Water will move into the cell. E) No change will result; the solution is isotonic.