Question 1
Multiple choiceEasy1 markFollowing ultracentrifugation, a researcher tests separated cell components to relate their structures to their functions. Which component should be classified as an organelle?
Show answer and explanation
Answer: D. Organelles are discrete cell subunits adapted to perform specific functions; the plasma membrane is classified as an organelle.
A: treats the cytoplasm, which is not an organelle, as a discrete subunit.
B: confuses the cytoskeleton with an organelle; it is not classified as one.
C: treats the cell wall as an organelle, although it is not classified as one.
Remember: the plasma membrane is an organelle, but the cell wall, cytoskeleton and cytoplasm are not.