Which of the following statements is false about most metabolic pathways? a. pathways serve to increase the efficiency of energy transfers. b. the enzymes that catalyze reactions in metabolic pathways generally catalyze only a single step. c. the rates of pathway reactions vary to respond to changing conditions. d. most pathways are reversible under physiological conditions.

Which are observations about the tree on the right ,? check all that apply

All living organisms are composed of a. only one cell. b. at least 100 cells. c. at least three cells. d. one or more cells.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?