During digestion
a. carbohydrates are split into proteins.
b. proteins are broken down into fatty acids.
c. fatty acids are split into non-fatty acids.
d. carbohydrates, proteins, lipids, and nucleic acids are split into smaller chemical subunits.
e. carbohydrates, proteins, lipids, and nucleic acids are split into larger chemical subunits.
D
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How does the level of genetic variation in humans typically compare to other species?
A. higher than other species B. lower than other species C. about the same as other species D. not sure because we have been unable to accurately measure genetic variation in humans and other species
Sounds
a. are waves of compressed air. b. are detected by mechanoreceptors. c. may be measured, with respect to their loudness, in decibels. d. that vary by one decibel can be differentiated by the human ear. e. include all of these.
Which autosomal dominant condition can be controlled by dietary means?
a. cystic fibrosis b. PKU c. Tay-Sachs disease d. Marfan syndrome e. achondroplasia
Animal cells are permeable to water and urea but NOT to sucrose. Initially, the inside of a cell contains 1 M sucrose and 1 M urea and the outside 2 M sucrose and 1 M urea. After the system reaches equilibrium, what changes are observed?
A. The molarity of sucrose would be similar inside and outside the cell and water would move out of the cell causing the cell to shrivel. B. The molarity of urea would be higher outside than inside the cell. C. Water would move out of the cell causing the cell to shrivel. D. The molarity of urea would be higher outside the cell and the molarity of sucrose would be similar inside and outside the cell. E. The molarity of sucrose would be similar inside and outside the cell.