Adv Science

AIDS.gov Function: The function of the immune system is to keep your body safe from diseases, viruses, and bacteria that do enter the body. Organs: Thymus- The thymus teaches the T-cells during crucial childhood development. Bone Marrow- The bone marrow contains and produces many blood cells. Spleen- The spleen filters blood to keep bacteria away. Tonsils-The tonsils contain bacteria and germs. Lymph Nodes- Lymph nodes create lymphocytes which fight against bacteria before it goes back into your bloodstream. Skin-The skin protects your body from outside invaders, such as germs and viruses. Liver- The liver removes toxic chemicals. Interactions:  The immune system takes care of every organ. By this I mean the immune system attacks any viruses that are going after any part of your body. It has a strong relationship with the circulatory system. The immune system has the job of removing chemicals and bacteria from the bloodstream. Keeping these germs out of your circul

Image: New Health Advisor Summary:      Cells growing and dividing is known as the cell cycle or cell division. There are quite a few steps to this process and they are interphase, prophase, metaphase, anaphase, telophase and cytokinesis. During interphase cells grow, copy their DNA, and prepare for division. The specific process in which cells copy their DNA is replication. During prophase the chromatin condenses into chromosomes. When metaphase takes place the chromosomes line up across the center of the cell. As anaphase occurs, the centromeres split and the chromatids separate. A nuclear cover forms around the chromosomes during telophase. Through cytokinesis, the cytoplasm splits moving organelles into the new cell. The DNA is copied before mitosis occurs to insure the new cell has the correct genetic information. Phosphate and deoxyribose make up the two sides of DNA. Cell division is the very complex cycle of cells dividing. S&EP-Communicating Information:      Fo

Image: commons.wikimedia.org Summary:     The two common ways things move into the cell are defusion and osmosis. Defusion is the movement of particles from an area of high concentration to and area of low concentration. This movement requires no energy. Osmosis is when water moves from and area with high concentration to an area with low concentration. Solvent is the liquid something is dissolved in while solute is what is dissolved. People thing that the solute disappears, but it doesn't. It is so small the naked eye cannot see. This is why dissolving is a physical change. Isotonic is when both sides of the membrane have the same concentration. Water moves back and forth from both sides. If something is hypotonic there is more solute on the inside of the membrane so water moves in. Hypotonic is when there is more solute on the outside so water moves out. As our lesson of movement across membranes closed, learning about the duplication of cells began. In the picture above

Image: I got this off of the cell energy cycle gizmo.  Summary:      Cellular respiration is when your body converts oxygen and glucose into energy. The oxygen humans and animals breathe breaks down, or makes glucose into tinier pieces, so the body can use it. Glucose, a sugar that your body needs to make energy, is a very important part of this cycle. The formula for this process is C6H12O6 + O2 -----> CO2 + H2O + Energy. Oxygen is in the mitochondrion and glucose is in the cytoplasm. The glucose molecule split into two pyruvic acids which produce a minimal amount of energy. When the pyruvic acids move into the mitochondrion huge amount energy is produced, along with carbon dioxide and water. As for photosynthesis, the formula is H20 + CO2 ---(light energy)--> O2+ C6H12O6. The carbon dioxide and water are in the chloroplast. Once you add the sunlight oxygen and glucose are produced. S&EP- Using Mathematics:      As mentioned above, there are equations for both pho