A Ball at the End of a String Is Swinging

question 32

Multiple Choice

A ball at the end of a string is swinging as a simple pendulum. Assuming no loss in energy due to friction, we can say for the ball that

• A) the potential energy is maximum at each end of the motion.
• B) the mechanical energy changes and is maximum where the kinetic energy is minimum.
• C) the mechanical energy changes and is maximum where the kinetic energy is maximum.
• D) the kinetic energy does not change but the potential energy does.

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Definitions:

Receptor-Mediated Endocytosis

A type of endocytosis in which extracellular molecules become bound to specific receptors on the cell surface and then enter the cytoplasm enclosed in vesicles. Compare with phagocytosis and pinocytosis.

Membrane-Bound Enzymes

Enzymes that are attached to or associated with a cell membrane, playing crucial roles in various cellular processes.

Signal Transduction

A process in which a cell converts and amplifies an extracellular signal into an intracellular signal that affects some function in the cell. Also see cell signaling.

ATP

Abbreviation for adenosine triphosphate, a molecule that stores and transmits chemical energy within cells, vital for many cellular processes.