Both photosynthesis and aerobic cellular respiration produce atp using an electron transport chain. therefore, both chloroplasts and mitochondria select one: a. membranous structures b. the electron carrier nadph c. the electron carrier nadh d. none of the above

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

Which label correctly identifies what x represents in the concept map?

18. over time, how do sand dunes tend to migrate? a. perpendicular to the movement of the wind b. in the same direction as the wind blows c. toward the wind d. in random directions