Which of the following can be most accurately described as a decomposition reaction?


a. C₆H₁₂O₆ + 6 O₂ → 6 H₂O + 6 CO₂
b. glucose + ATP → glucose phosphate + ADP
c. 6 H₂O + 6 CO₂ → C₆H₁₂O₆ + 6 O₂
d. A + BC → AB + C

Which of the following structures have no electrical charge?

a. protons

b. electrons

c. neutrons

d. ions

The atomic mass of an atom most closely approximates the sum of the masses of all its __________.

a. protons

b. isotopes

c. electrons

d protons and neutrons

The outermost electron shell of an atom is known as the _____________ shell.

The principal short-term energy storage molecule in cells is __________ .

Nitrogen exists primarily as _____ in the environment.

Organisms typically make use of phosphorus in the form of _____.

A proton ___________:

a) Has one positive charge.

b) Has one AMU.

c) Is found in the nucleus of the atom.

d) Only a and b are true.

e) a, b, and c are true.

The average oxygen atom has a mass number of 16 and an atomic number of 8. This means that the number of neutrons in this oxygen atom is:

a) 24.

b) 8.

c) 16.

d) 4.

e) 2.