Electro

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

• It allows the strands of DNA to be cut into various lengths for testing

• It restricts the number of base pairs that can be tested in a sample

• It makes the testing simpler by moving the strands into the gel faster

• It charges the DNA strands

WHAT IS RESPONSIBLE FOR THE CURRENT TO FLOW?

• PROTONS

• ELECTRONS

• NUCLEUS

• BOTH A & B

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NGSS.HS-PS2-5

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Unit for quantity of electricity is

• ampere-hour

• watt

• joule

• coulomb

How many electrons can the first energy level hold?

• 1

• 2

• 8

• 0

what is the electron arrangement of atom N?

• 2.

• 2.8

• 2.5

• 2.8.8

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NGSS.HS-PS1-1

Electrons are: 

• Positive

• Negative

• Neutral

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What is the primary function of an electrolytic cell?

• To convert chemical energy into electrical energy

• To convert electrical energy into chemical energy

• To measure the pH of a solution

• To separate isotopes

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NGSS.HS-PS3-2

Which of the following particles is responsible for electricity flow in a conductor?

• Protons

• Neutrons

• Electrons

• Ions

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the unit of electric charge?

• Ampere

• Volt

• Coulomb

• Ohm

In an electrochemical cell, which component is the site of oxidation?

• Anode

• Cathode

• Salt bridge

• Electrolyte