The structures that an animal uses to exchange gases with its surroundings make up the

a. digestive system
b. respiratory system
c. excretory system
d. circulatory system

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.

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.