Choose the most effective means of birth control from the following list.
A. birth control pill
B. condom
C. spermicidal foam
D. diaphragm
Answer: A
You might also like to view...
Which of the following described roles attributed to accessory pigments such as carotenes and phycobiliproteins? (Check all that apply.)
A. These pigments extend the spectrum of wavelengths that will drive photosynthesis. B. Accessory pigments protect organisms from potentially damaging intense sunlight. C. The accessory pigments are involved in maintaining the Calvin cycle. D. These pigments absorb light in ranges not absorbed by chlorophylls and transfer the energy to chlorophylls.
Which three of the following groups are most commonly used to covalently modify an enzyme and its activity? (Check all that apply.)
A. Methyl group B. Hydroxyl group C. Phosphoryl group D. Adenyl group
Which of the following statements best describes ATP?
A. ATP is formed when energy is released during photosynthesis. B. When ADP + P becomes ATP, the amount of energy released is enough for a biological purpose. C. ADP is extremely high in potential energy. D. ATP is comprised of a sugar, base, and three phosphate groups.
What is true of a fossil that is classified as a "transitional form"?
A. It has all of the traits of its ancestors and all of the traits of its descendants. B. It has all of the traits of its ancestors and some of the traits of its descendants. C. It has some of the traits of its ancestors and all of the traits of its descendants. D. It has some of the traits of its ancestors and some of the traits of its descendants.