When scientists copy dna, they first have to cut out the part they want to copy. what molecule do they use to do this?

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?

What are positive impacts of algae? how is it used?