AP Biology - Unit 4 Review

Front

What is cell communication?

Back

Cell communication is the process by which cells send and receive signals to coordinate their functions, essential for maintaining homeostasis and responding to environmental changes.

Front

What evidence supports the evolution of cell communication?

Back

The processes are very similar in prokaryotic and eukaryotic cells, indicating a common evolutionary origin.

Front

What are the three parts of a signal transduction pathway?

Back

Reception, transduction, response.

Front

What is homeostasis?

Back

Homeostasis is the maintenance of a relatively stable internal environment despite external changes.

Front

What occurs during cytokinesis in plant cells?

Back

A cell plate develops between two nuclei, leading to the division of the cell.

Front

What is an effector in a feedback loop?

Back

An effector is a body part that makes a change to bring the system back to homeostasis.

Front

What is the role of receptors in cell signaling?

Back

Receptors are proteins that detect signals and initiate a response in the cell.

Front

What is the difference between prokaryotic and eukaryotic cell communication?

Back

Prokaryotic cells often use simpler signaling mechanisms, while eukaryotic cells have more complex and varied signaling pathways.

Front

What is the significance of signal amplification in signal transduction?

Back

Signal amplification allows a small initial signal to produce a large response, enhancing the cell's ability to react to stimuli.

Front

How do feedback loops maintain homeostasis?

Back

Feedback loops involve sensors, control centers, and effectors that work together to regulate physiological processes.