Why are saprotrophs so important to a marine food web? they break down dead organisms and recycle nutrients. they directly to maintain the population sizes of different predators. they primarily eliminate toxins from the water that can harm phytoplankton. they produce significant amounts of energy that is used by top consumers.

Which of these parts of the membrane large moecules pass through it ?

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?

Which of these is true of the cytoplasm of an unfertilized egg? a. it is an unevenly distributed mixture of mrna, proteins, organelles, and other substances. b. it does not contain substances that are important in directing development. c. these substances are supplied by the sperm. d. it does not contain substances that are important in directing development. e. development is directed solely by the surrounding cells. f. it is a homogeneous mixture of mrna, proteins, organelles, and other substances. g. it does not contain substances that are important in directing development. h. these substances are produced by the dna of the fertilized zygote.