Which best describes the role of the esophagus in digestion ?
a : it release acid and mixes food
b : it aids in absorption of nutrients from food
c : it carries food from the mouth to the stomach
d : it carries food from the stomach to

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.

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?

What is an example of a scientific question that galileo could not have answered with out this new tool?