Question: Choose your answer.

Most of Earth's surface is covered by

OPTIONS:
- sand
- trees
- water
- mountains
My Answer: water

Question: Choose your answer.

Which process drives most of the ATP synthesis in a chloroplast?

OPTIONS:
- flow of protons across an electrochemical gradient
- flow of tRNA across an electrochemical gradient
- exposure of ADP to electromagnetic waves
- exposure of carbohydrates to electromagnetic waves
My Answer: flow of protons across an electrochemical gradient

Question: Choose your answer.

Some plant cells are coated in a waxy layer that prevents water loss. This specialization is found in which plant cells?

OPTIONS:
- internal stem cells
- internal root cells
- cells on the plant surface
- cells in the plant reproductive system
My Answer: cells on the plant surface

Question: Choose your answer.

In a lab investigation, a student notes that two metal blocks have the same mass. Based on this observation, if the two blocks were put on opposite sides of a balance, they would best represent

OPTIONS:
- balanced forces.
- unbalanced forces.
- equal and opposite reactions.
- objects in motion.
My Answer:
balanced forces.