Introduction This experiment was osmosis and diffusion. In this experiment I began by calculating the volume of a fresh chicken egg. Then to determine the effect of osmotic pressure change on a cell I soaked the raw chicken egg in vinegar for 24 hrs‚ and measured the volume of the egg after the shell had been dissolved by the vinegar. The egg was then submerged in corn syrup for 1-24 hrs‚ then measured and recorded the new egg volume. Finally the egg was submerged in water for 1-24hrs‚ again the
Premium Osmosis Chemistry Concentration
mammals. 3) Slide 3: Why is the nucleus of the cell in slide 3 so large? In other words‚ what is this cell doing that requires that its nucleus be so large? (Please be specific). In eukaryotic cell in slide #3 has organelles including a nucleus containing DNA and mitochondria energy organelles .Compared to the prokaryotic cell which has the DNA in the cytoplasm smaller and simpler and doesn’t contain a nucleus or other organelles‚ it does have cell membrane. Bacteria and Archea are single celled
Free Protein DNA Bacteria
The Bloods and the Crips The United States has had problems with gangs dated back as early as the 1800s. In today’s society when people hear about gangs the first two gangs that they think of are the Bloods and the Crips. Both of these gangs originated about forty years ago but are still going strong today. Although‚ at first these gangs were formed as a sort of territorial war the activities of the gang members has grown increasingly more dangerous. The Bloods and the Crips are mortal enemies
Free Gang Bloods Los Angeles
Stem Cells and Tissue Renewal 1 The Multicellular “Habitat” • Cells of multicellular organisms – highly specialized – over 200 types in human body • Arranged into tissues‚ organs‚ organ systems • Unable to survive outside body “habitat” skin wont survive in heart tissues. They all start up identicals 2 Specialized Cell Types • Cells of early embryo identical • Differentiation results in specialized cell types – some differentiated cells continue to divide – many others are
Premium Stem cell Cellular differentiation
circulatory systems work together to distribute oxygen to‚ and remove carbon dioxide from the cells of the body. The circulatory system and the respiratory system work closely together to ensure that organ tissues receive enough oxygen. Oxygen is required for cellular functions. The air breathed in and held in the lungs is transferred to the blood. The blood is circulated by the heart‚ which pumps the oxygenated blood from the lungs to the body. Additionally‚ the two body systems work together to remove
Free Respiratory physiology Oxygen Lung
Donating Blood as Stated by the American Red Cross It is said that 70% of Americans are eligible to give blood even though the criteria to donate seems quite strict. Each case is treated individually based on why the person is donating. An autologous donor is one who is giving blood to use for them self if needed during a future surgery. All others are anonymous donors who donate blood for others to use when it is needed. I will discuss the reasons why a person could not donate blood as an anonymous
Premium Blood donation HIV Blood
Part A: Title: Diffusion Diffusion is the spontaneous movement of particles from where they are more concentrated to where they are less concentrated. For this experiment‚ a 14 cm glass was filled with cold tap water. A drop of red food coloring was dropped in the cup. A stopwatch was used to measure the time it took for the food coloring to get to the bottom of the cup. The average diffusion rate was .78 cm a second. If a different color was used‚ I do not think it would have made a difference
Premium Osmosis Concentration Diffusion
Blood Brother Performance Essay On the 14TH June 2012‚ we watched Blood Brothers‚ by Willy Russell‚ at the Phoenix Theatre. The play ‘Blood Brothers’ is set in 1980s Britain; it deals with numerous themes such as fate‚ the class system‚ insanity‚ superstition and division. The genres of the play are drama‚ tragedy & comedy-to an extent. Something I found particularly interesting was how the genre of comedy became less and less apparent as the play went on‚ whereas the genre of tragedy- became
Premium Social class Working class
Movement in and out of cells Diffusion: (mixing molecules) Molecules and ions in a liquid or a gas move continuously. The movement is quite random‚ and the particles change direction as they bump into one another. The particles collide more often when they are close together (when they are concentrated) and so they tend to diffuse‚ or spread out‚ until they are spaced evenly throughout the gas or liquid. The random movement of particles is due to their own kinetic energy. When the diffusion
Premium Cell wall Cell Cell membrane
maintaining vascular tone‚ blood flow‚ and salt and water excretion. Moreover‚ there are important and opposing functions of both prostacyclin PGI2 and thromboxane TXA2 in maintaining the vascular homeostasis and good cardiovascular health‚ in detail‚ TXA2 is synthesised in the platelets by the action of COX-1 during the platelet activation‚ it increases platelet aggregation‚ vasoconstriction‚ and smooth muscle proliferation. In contrast‚ PGI2 is produced in the endothelial cells by the action of COX-2;
Premium Paracetamol