Question

1. active transport moves molecules from an area of __________ to __________ concentration.
2. the energy currency of the cell is ____________.
3. the three main subatomic particles in an atom are protons, neutrons, and ____________.

Explanation:

• For question 8, active transport is against the concentration - gradient.
• For question 9, ATP is the energy - currency of the cell.
• For question 10, the three main subatomic particles are protons, neutrons, and electrons.

Answer:

1. low; high
2. ATP
3. electrons