AP Biology: Unit 4 Review (CED)

Front

What is Negative Feedback?

Back

A feedback mechanism that helps maintain homeostasis by counteracting changes in a physiological condition.

Front

What are the stages of mitosis in order?

Back

Prophase, Metaphase, Anaphase, Telophase.

Front

Which process is NOT a stage of the cell cycle?

Back

Apoptosis is not a stage of the cell cycle; it is a process of programmed cell death.

Front

What is the role of ligands in signal transduction?

Back

Ligands are molecules that bind to receptors to initiate a signal transduction pathway.

Front

What are the three parts of a signal transduction pathway?

Back

Reception, Transduction, Response.

Front

Define Homeostasis.

Back

The ability of an organism to maintain stable internal conditions despite changes in the external environment.

Front

What is the function of secondary messengers in signal transduction?

Back

Secondary messengers amplify the signal received by the receptor and help propagate the signal within the cell.

Front

What is apoptosis?

Back

Apoptosis is the process of programmed cell death that occurs in multicellular organisms.

Front

What is the significance of the phosphorylation cascade?

Back

It is a series of chemical reactions in a cell that are mediated by enzymes and involve the phosphorylation of proteins, amplifying the signal.

Front

What is the difference between prokaryotic and eukaryotic cell division?

Back

Prokaryotic cells divide by binary fission, while eukaryotic cells undergo mitosis and cytokinesis.