In a water molecule, hydrogen and oxygen are held together by a ________ bond.

In the equation 2 H2 + O2 → 2 H2O, the H2 molecules are ________ and the H2O molecules are ________.

Which statement about evolution is true?

Which statement about dehydration reactions is false?

In the equation 2 H2 + O2 → 2 H2O, the H2 molecules are ________ and the H2O molecules are ________.

Which statement about evolution is true?

An immune system cell called the plasma cell produces thousands of antibodies (a type of protein) per second for release into the body. What type of intracellular structure would you expect to be very prominent within the cell?

Radioactive isotopes

Which statement about water is false?

Which molecule would be correctly classified as a protein?