For each of the following sentences, fill in the blanks with the best word or ph

Question

For each of the following sentences, fill in the blanks with the best word or phrase selected from the list below. Not all words or phrases will be used; each word or phrase should be used only once. (5 points) The survival, and size of each cell in an animal are controlled by extracellular signal molecules secreted by neighboring and distant cells. Many of these signal molecules bind to a cell-surface and trigger various intracellular signaling pathways. One stimulates cell division class of signal molecules, called by releasing the molecular brakes that keep cells in the or phase of the cell cycle. Members of a second class of signal molecules are called because they stimulate cell ???????????

Explanation / Answer

The survival,proliferation and size of each cell in the animal are controlled by extracellular signal molecules secreted by neighboring and distant cells.Many of these signal molecule bind to a cell surface receptor and trigger various intracelular signaling pathways.One class of signal molecules,called mitogens stimulates cell division by releasing the molecular brakes that keep cells in G1 or S phase of the cell cycle.Members of the second class of signal molecules are called growth factors because they stimulates cell growth and an increase in cell mass.The third class of signal molecule called survival factors,inhibits apoptosis by regulating members of the Bcl-2 family of proteins.In addition to such stimulatory,some signal proteins such as myostatin act negatively on primordial muscle cells,inhibiting their survival,growth or proliferation.

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.