Classify these animals as vertebrates or invertebrates. starfish: amphibian: bird: octopus: coral: fish: clam: reptile:

Depending on the organism the number of in a cell may change

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Imagine you are introducing the lac operan and the trp operon to students who have never learned about it before. complete the table to compare the similarities and differences between the two operons