Which of the following statements related to membranes is TRUE? a. Membranes are selectively permeable.

b. Membranes allow diffusion of small molecules.

c. Membranes would allow some molecules to be more concentrated on one side than on the other.

d. All of these are true.

E. None of these are true.

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

Taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? view available hint(s)taq polymerase is an enzyme isolated from the organism thermophilus aquaticus. this organism has been found living in the hot springs of yellowstone national park. this enzyme is used to copy human dna from crime scenes. most reactions are performed at ranges similar to those of the human body; however, what considerations should be made for optimum use of this enzyme? the enzyme will not work on human dna. nothing should be altered. the ph should be decreased. the temperature should be raised.

List five ways we are indebted to phytoplankton