<p>GO GO STEM:</p><p>Go To Link: http://learn.genetics.utah.edu/content/stemcells/sctypes/</p><p>Answer the following questions:</p><p>BLOOD CELL NICHE:</p><p>1. ______become damaged over time and need to be replaced often. </p><p>2. The stem cell niche responsible for producing blood cells is inside the bones, in the ______.</p><p>3. Pull the handle to release signals that will ______the stem cell.</p><p>4. The stem cell divides. One copy stays in the ______, the other will become a ______</p><p>5. The ______activate genes that will transform the stem cell.</p><p>6. As the new red blood cell matures, it makes lots of ______, the ______that carries ______to tissues in your body.</p><p>7. To complete the transformation from stem cell to red blood cell, the ______and most of the other ______are ______.</p><p>8. This red blood cell will live for about ______months in the bloodstream before a new red blood cell takes its place.</p><p>9. ______is made up of many different cell types that do a variety of jobs. Stem cells in this niche give rise to many different kinds of cells!</p><p>What is function of WHITE BLOOD CELL</p><p>What is function of RED BLOOD CELL</p><p>BRAIN CELL:</p><p>1. ______send and receive ______in your brain. Your body makes most of its neurons before birth. But there are at least two regions where stem cells continue to give rise to new neurons: the hippocampus, a brain region important for memory; and the olfactory bulb, which powers your sense of smell.</p><p>2. Signals are ______that will ______the stem cell.</p><p>3. The stem cell ______. One copy stays in the niche, the other will become a new ______</p><p>4. The signals ______that will transform the stem cell.</p><p>5. ______come in many shapes and sizes. Projections extending from the cell ______and ______signals to and from other neurons. </p><p>Intestinal</p><p>1. Inside the intestine are tiny finger-like projections called ______that ______nutrients and move food through the digestive system. </p><p>2. The cells on the surface of the villi only ______a ______before they are shed and replaced</p><p>3. This stem cell niche sits inside ______at the base of the villi.</p><p>4. The stem cell ______. One copy stays in the niche, the other will become a ______cell for the intestine.</p><p>5. The signals activate ______that will ______the stem cell.</p><p>6. The new cell will make its way up from the crypt to the villus. As it migrates it further ______to perform its new function: absorbing nutrients from food passing through the gut.</p><p>BONE CELL:</p><p>1. ______are living organs filled with busy cells.</p><p>2. Stem cells in this niche maintain and ______our bones.</p><p>3. The stem cell divides. One copy stays in the ______,the other will become a ______.</p><p>4. The signals ______that will ______the stem cell. These signals work ______during childhood and adolescence, a time of dramatic bone ______.</p><p>5. This stem cell will become an ______. Osteoblasts build and repair bones by ______a special kind of extracellular matrix. 6. One important ______in this matrix is ______, the most abundant protein in the human body. 25% of the protein in your body is collagen!</p>