Giving BRIANLIEST PLZ HELP AND ANSWER ASAP! Blake is using a screw to hang a picture in his room. Which of the these is the best description of a screw?

A screw allows you to use less force because a screw acts like a pulley.

A screw allows you to use less force because a screw acts like an inclined plane.

A screw allows you to do less work because a screw acts like a lever.

A screw allows you to do less work because a screw acts like an inclined plane.

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.

What does polymerase chain reaction (pcr) do? o a. separates dna fragments by size o b. cuts a dna sample into fragments o c. provides an overall picture of a person's chromosomes o d. makes more copies of a sample of dna

What is the main fuel source for the work of the cell