Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
11/14 & 11/15 - 7th Grade Agenda Learning Objective: Learn about Stem Cells Collect HW: Reading & Note Taking p.81 – 84 Chap 4 Study Guide Who Wants to be a Millionaire Chap 4 Video: Test Your Brain Class Reading p.129 - 141 HW: Unit Review & Reinforce p. 89 & 92 Reminder: Chap 4 Test on 11/19 & 11/20 Reflection • Prompt: What is cancer and how can you reduce the chance of getting cancer? DNA – Deoxyribonucleic Acid • Nitrogen Based Molecules (4 Letters of DNA Alphabet) T • A pairs up with ____ C • G pairs up with ____ Cell Cycle • Stage 1: Interphase: Period before cell division occurs. –Cell doubles in size –Copy the DNA in its nucleus Cell Cycle • Stage 2: Mitosis –One copy of the DNA is distributed into each of the two daughter cells Cell Cycle • Stage 3: Cytokinesis –Cytoplasm divides Cell Cycle Facts • Some cells divide every 2 hours or less • Human Liver cells divide every 22 hours • There are about 100 _____ million cells dividing in your body right now!! rain cells • Most cells divide but human b_____ never divide. Cell Cycle Facts • Some cells divide every 2 hours or less • Human Liver cells divide every 22 hours • There are about 100 million cells dividing in your body right now!! • Most cells divide but human brain cells never divide. Chromosomes DNA Replication • DNA looks like a spiral staircase “double helix” • Two sides of DNA ladder are made up of sugar called deoxyribose and Phosphate • Adenine always pairs with Thymine • Cytosine always pairs with Guanine Cancer • What is Cancer Mutation: Damage to the DNA Cancer • Cancer begins when mu________ tation disrupt the normal cell cycle causing cells to di_________ in an vide uncontrolled way mor (a mass of • Eventually a tu______ abnormal cells) forms. How Cancer Spreads Treating Cancer • Surgery: Only effective during early stages • Radiation: Radiation also destroy healthy cells • Chemotherapy: Uses of drugs to kill cancer cells. Side effect: Also kills healthy cells. Cancer Prevention • 2/3 of all cancer deaths are caused by tobacco use or unhealthful diets • Smoking is the main cause of lung cancer Cancer Prevention • Diet high in fat (fatty meats, fried foods) is harmful • Diet that includes a lot of fruits, vegetables and grain products can lower some type of cancer. Differentiation • As cells differentiate, they become diff_____ erent from one another. Stem Cells • Stem Cells respond to specific needs in the body by becoming a iali spec____zed ce___ ll