1. Which is an example of an organ system? A.
the lining of the intestine
B.
lungs taking in oxygen
C.
the compartments that make up the liver and control its function
D.
the brain, spinal cord, and nerves working together for one purpose

2. Mitchell is creating a model of a plant cell. Mitchell wants to include organelles that are involved in energy production for the cell. Which organelles should Mitchell include?
A.
Mitchell should include chloroplasts to transform light energy and mitochondria to release energy from food.
B.
Mitchell should use mitochondria to store energy and cytoplasm to release energy from food.
C.
Mitchell should include the nucleus to transform light energy and chloroplasts to store energy.
D.
Mitchell should include cytoplasm to store energy and lysosomes to release energy from food.

3. The lowest level of organization in an organism is
A.
an organ because organs work together in organ systems.

B.
an organ system because organ systems engage in critical functions.

C.
a tissue because tissues compose larger units such as organs.

D.
a cell because cells are the independent units that make up the whole.