BIOL 1202 : Exam 2 Review
Document Summary
What were the early conditions of earth? i. Rich in hydrogen, methane, & ammonia, h2o b. Why was it important for the conditions of earth to be different? i. What was the hypothesis studied by urey and miller? i. Rna was probably the polymer which acted as the first genetic material. Why doesn"t life arise today ii. iii. e. i. ii. Atmosphere has more o2 which can break or prevent the formation of chemical bonds, needed for abiotic formation. Atmosphere has developed an ozone layer which blocks uv radiation that would have been an energy source for abiotic formation f. Be able to do problems with half-life. i. ii. Half life: half of isotope is now remaining g. What kind of respiration did the first organisms do? i. What organism was first to move to land? i. j. i. plants k. What animal was first to move to land? i. arthropods i. arthropods l.
