Match each feature to the correct type of endocytosis. Some features may apply to both.

A cell’s DNA is damaged. p53 is activated in response. Which of the following best describes what happens next?

What holds a lipid bilayer together in an aqueous environment?

Match each actin crosslinking protein (left side) to the higher-order structure it helps organize (right side)

Which of the following correctly describes how the ubiquitin-proteasome system (UPS) targets a protein for destruction?

A cell biologist is studying a mutant cell line in which the inner mitochondrial membrane has become leaky to protons (H⁺), so that protons can flow freely back into the matrix without passing through ATP synthase. What would you expect to happen to ATP production in these cells, and why?

What is the structural difference between filopodia and lamellipodia?

What are the TRUE statements about Anaphase promoting complex (APC)? (check all that apply)

During what phase of the cell cycle are cells neither growing nor dividing — in other words, during what phase are cells senescent, or “paused”?

What is FALSE about the similarities and differences between kinesin and myosin II motor proteins?