AP Bio Unit 4 Review

Front

What does a protein kinase do?

Back

Transfers phosphates from ATP to proteins.

Front

Endocrine glands secrete _

Back

Hormones.

Front

During which phase of the cell cycle does the cell spend the most time?

Back

Interphase.

Front

The final activated molecule in a signaling pathway may function as a what?

Back

Transcription factor.

Front

Structure (b) is a ____.

Back

Centromere.

Front

What is the role of a transcription factor?

Back

To regulate gene expression by binding to specific DNA sequences.

Front

What is the function of a second messenger in cell signaling?

Back

To relay signals received at receptors on the cell surface to target molecules inside the cell.

Front

What are the main stages of the cell cycle?

Back

Interphase, Mitosis, and Cytokinesis.

Front

What is the difference between chromatid and chromosome?

Back

A chromatid is one half of a duplicated chromosome, while a chromosome is a single piece of DNA that contains many genes.

Front

What is the significance of the centromere during cell division?

Back

It is the region where sister chromatids are joined and where the spindle fibers attach during mitosis.