When a student uses the equation, mass multiplied by change in temperature multiplied by specific heat, what is being calculated? q = m \times C \times \Delta T OPTIONS:
- a phase change
- stored energy
- heat convection
- heat gain or heat loss
A: heat gain or heat loss

How can plants most likely improve air quality? OPTIONS:
- by absorbing nutrients
- by producing oxygen
- by producing sugar
- by absorbing water
A: by producing oxygen

If the atomic mass number of an atom is 35, which statement is most accurate? OPTIONS:
- The atom is not an isotope.
- The atomic number is less than 17.
- The atom has an odd number of neutrons.
- The number of protons does not equal the number of neutrons.
A: The number of protons does not equal the number of neutrons.

Which of the following allows materials to enter and leave a cell? OPTIONS:
- cell wall
- mitochondria
- vacuole
- cell membrane
A:
cell membrane