In preparation for an electrophoresis procedure, enzymes are added to DNA in order to

1.) Convert the DNA into gel

2.) Cut the DNA into fragments

3.) Change the color of the DNA

or 4.) Produce longer sections of DNA

The amount of work done at a grocery store stocker uses 120 N of force to lift a sack of flour 1.5 m onto a shelf

All matter is made of tiny particles which are in constant ...

Semi-conductors are materials that A) are good conductors. B) allow electron flow and resist neutron flow. c) have insulator and conductor properties. d) allow neutron flow. Semi-conductors are materials that have insulator and conductor properties.

A 0.8-m³ rigid tank contains carbon dioxide (CO₂) gas at 250 K and 100 kPa. A 500-W electric resistance heater placed in the tank is now turned on and kept on for 40 min after which the pressure of CO₂ is measured to be 175 kPa.

What's a difference between mercury and oxygen? (They both are elements)

If the rate $56 per 7 hours is reduced to a unit rate, the result is dollars per hour.

An oil drop with a mass of 8.3 grams and a charge of + 2.2 mC is floating 7.68 meters above a positively charged floor. What is the magnitude of the charge on the floor?

True or false? disk blocks are made up of one or more sectors

Write a paragraph showing the relationship between chemistry and physical based on what you've learned from the periodic table

An aluminum screw has a density of 2.7 g/mL and a volume of 15mL. What is the mass of the screw?