Which of these chemicals is needed in order for the metabolic reactions of photosynthesis to occur?
a) fructose
b) glucose
c) oxygen

Joe is breeding cockroaches in his dorm room. he finds that the average wing length in his population of cockroaches is 4 cm. he chooses the six cockroaches that have the largest wings; the average wing length among these selected cockroaches is 10 cm. joe interbreeds these selected cockroaches. from earlier studies, he knows that the narrow-sense heritability for wing length in his population of cockroaches is 0.6. a. calculate the selection differential and expected response to selection for wing length in these cockroaches. b. what should be the average wing length of the progeny of the selected cockroaches?

The fluid mosaic model of the membrane proposed that membranes

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f