BIO 150 Final Exam Questions & Answers(RATED A+)

Which of the following is NOT a component of the plasma membrane? a. Phospholipids b. Cholesterol c. Integral proteins d. Peripheral proteins e. Ribonucleic acids - ANSWER E _______________ is a term that describes both the polar and nonpolar nature of phospholipids. a. amphitheaters b. ambidextrous c. amphibolic d. amphipathic e. amphibious - ANSWER D Which of the following would cause an increase in van der Wal interactions within a membrane bilayer? a. Long unsaturated fatty acid tails b. Long saturated fatty acid tails c. Short unsaturated fatty acid tails d. Short saturated fatty acid tails e. A combination of short and long fatty acid tails - ANSWER B What would be the result of a cell placed in a hypertonic environment? a. The solution would have a higher salt concentration than the cell so water would flow out of the cell and it would shrivel. b. The solution would have a lower salt concentration than the cell so water would flow out of the cell and it would shrivel. c. The solution would have a lower salt concentration than the cell so water would flow out of the cell and it would burst. d. The water would flow into and out of the cell at equal rates. - ANSWER A In the flower petunia, PhABCG1 is a membrane embedded protein that transports volatile organic compounds across the membrane. This protein uses ATP hydrolysis to supply the energy needed to transport these molecules. This is an example of ____________. a. Simple diffusion b. Facilitated diffusion c. Primary active transport d. Secondary active transport e. Osmosis - ANSWER C Which of the following is a similarity shared between bacteria and mammalian cells?