Cell Signaling
Cell Cycle Regulation
Cell Renewal
Apoptosis
Disease Mechanisms
100

This signaling type involves signal molecules traveling long distances through the bloodstream. 

What is endocrine signaling?

100

Cells that permanently stop dividing often enter this cell cycle stage.

What is G0?

100

These cells can self-renew and differentiate into other cell types.

What are stem cells?

100

This phospholipid flips to the outer membrane during apoptosis. 

What is Phosphatidylserine?

100

Genes that promote excessive proliferation when mutated are called these.

What are oncogenes?

200

These receptors are the largest family of cell surface receptors. 

What are GPCRs?

200

These proteins activate CDKs to drive cell cycle progression. 

What are cyclins?

200

These cells are partially differentiated descendants of stem cells.  

What are progenitor cells? (may also accept transit-amplifying cells)

200

These membrane-bound fragments form during late apoptosis.

What are apoptotic bodies?

200

This is how stem cells and cancer cells extend their proliferative capability.

Increased telomerase activity. 

300

These receptors contain intrinsic tyrosine kinase activity.

What are receptor tyrosine kinases?

300

These kinases are activated in response to DNA damage. 

What are ATM and ATR?

300

This early embryonic stage is the source of embryonic stem cells.

What is a blastocyst?

300

Bax and Bak form pores during this mitochondrial event. 

What is MOMP (Mitochondrial Outer Membrane Permeabilization)?

300

This pathway is strongly associated with early inflammatory signaling. 

What is the NF-kB pathway?

400
In this pathway, a component of the receptor itself becomes a transcriptional regulator. 

What is the Notch pathway?

400

This protein induces expression of p21 (CDK inhibitor) during the DNA damage response.

What is p53?
400

This terms describes that embryonic stem cells can differentiate into any cell type in the body. 

What is pluripotent?

400

This structure is formed as a complex of cytochrome c and Apaf-1.

What is the apoptosome?

400

This tumor suppressor binds E2F TF and represses G1/S genes when unphosphorylated. 

What is Rb?

500

This pathway integrates nutrient, energy, and growth factor signals to regulate growth. 

What is the mTOR pathway?

500

This ubiquitin ligase is inhibited early in the cell cycle but is activated after the spindle assembly checkpoint in M phase. 

What is APC/C?

500

This region of the intestinal epithelium contains stem cells and transit-amplifying cells. 

What is the crypt?

500

Members of this protein family inhibit Bax and Bak activity. 

What is the Bcl-2 family?

500

This G-protein of the MAP Kinase pathway is frequently mutated in cancers, and remain locked in the activated conformation. 

What is Ras?