AP Bio Unit 4 Review

Front

What are the three steps of signal transduction?

Back

Reception, Transduction, Response

Front

What two components make an active MPF?

Back

Cyclin and a cyclin-dependent kinase

Front

During which phase is the greatest concentration of MPF found?

Back

M phase

Front

What is uncontrolled cell division that usually leads to tumors and disease called?

Back

Cancer

Front

Which organelle is only active during cell division and is responsible for producing spindle fibers?

Back

Centriole

Front

Define signal transduction.

Back

The process by which a cell responds to external signals through a series of molecular events.

Front

What role does cyclin play in the cell cycle?

Back

Cyclin regulates the progression of the cell cycle by activating cyclin-dependent kinases (CDKs).

Front

What is the function of a centriole during cell division?

Back

Centrioles help organize the mitotic spindle and are crucial for proper chromosome separation.

Front

What is the significance of the M phase in the cell cycle?

Back

The M phase is where cell division occurs, including mitosis and cytokinesis.

Front

What is the difference between benign and malignant tumors?

Back

Benign tumors are non-cancerous and do not spread, while malignant tumors are cancerous and can invade nearby tissues.