In the respiration reaction A) carbon combines with such ...

[NguyenJ]

In the respiration reaction
 
  A) carbon combines with such biological molecules as DNA.
  B) oxygen combines with the carbon in such biological molecules as glucose.
  C) CO2 combines with the carbon in such biological molecules as glucose.
  D) CO2 combines with H2O.
  E) oxygen combines with such biological molecules as DNA.

Question 2

What physics principle can be demonstrated by rubbing two transparency sheets with tissue paper and then holding them near each other?
 
  A) the electric motor
  B) certain features of the frictional force
  C) a new feature about the gravitational force
  D) the electric force
  E) the magnetic force

[randomguy133]

Answer to Question 1

B

Answer to Question 2

D