CURRENT EVENT BIOLOGY TEST-72 QUESTIONS AND ANSWERS

compare and contrast kidney and liver transplants the liver donor would be dead and the kidney would be alive but both transplants are possible What makes the pollination of Cacao trees so difficult? The petals curve around the male part making it hard for anything to pollinate it What is MRSA? methicillin-resistant staphylococcus aureus What is the structure and function of bioflim? Colonies of microbes enveloped in a protecting slime that shields them from antibiotics. What role does imitation play in developing killer whale communication? it helps whales develop their elaborate dialects of bleating pulses. Why are college dorms and their residents ideal for natural experiments studying germ transmissions? It makes an ideal natural experiment to trace the germs paths How does influenza spread among humans? by direct transmission (when an infected person sneezes mucus directly into the eyes, nose or mouth of another person); the airborne route (when someone inhales the aerosols produced by an infected person coughing, sneezing or spitting) and through hand-to-eye, hand-to-nose, What are some of the symptoms associated with the Zika virus and how are they spread? West nile or powassan virus. by ticks and mosquitoes What are symtoms of the Zika virus? inflammation of the brain or membranes surrounding it, terrible sickness, fetal defects. Do impalas and zebras stand a better chance in a high or low speed chase when pursued by predators? Low speed chase because impalas and zebras are slower and can get away with slower speeds Why is dark matter necessary and what do calculations suggest about its existance? It surrounds us and we need to knoew what it is. our calculations are that dark matter forms stars and planets What are NOx gases and how do they impact the environment? Nitric oxide or nitrogen dioxide. it reacts with the sun and makes ozone which can cause respiratory problems How do croplands contribute to NOx levels in the atmosphere? 20 to 51% of NOx What conditions are necessary to create life? Warm conditions, moisture, hot springs(to incubate), mix of gasses, underwater vents what kinds of organisms lived before humans appeared on earth? Dinosaurs and small micro-organisms How have hominids evolved over the years? They have adapted to their environment, could walk how are humans related to every other living thing on earth? The other living things connect through DNA and starting from one What cataclysmic events have occurred in earths history? Large asteroid hits earth What can we learn by studying fossils? what lived back then and how things evolved over time. What is evolution? change in a species over a long period of time and adapting to the environment to benefit a species What four elements did greek philosophers identify? earth, air, fire and water. How did priestley discover oxygen? He burned mercury and seen gas from it What did daltons experiments show? it showed the atomic theory and that atoms exist What did Avogadro discover? He was working with gases and said 22.4 liters of any gas contains the same number of particles or molecules What did Kekuld discover? The chemical structure of various molecules How did mendeleev contribute to chemistry? He made the periodic table of elements that show how elements relate what did Davy's experiments show? the different elements burn to form different colors how did thomson identify the electron? Measured the charge of an electron then found the mass was 1/200 of a proton and used a cathode ray what did rutherford's research show? That there is electrons in atoms that are negatively charged. Describe lewis's model of the electron. Atoms bond and exchange to form compounds What properties of radioactive elements dad Marie Curie discover? radium and prodimium What properties of radioactive elements did Rutherford discover? Alpha and beta particles What did bakeland produce? A polymer called bakelite and was very strong What are the unique properties of Buckyballs and Buckytubes? They are very small and very strong and made of carbon and stiffer that a diamond and 100x stronger than steel who was Barnum Brown and what was probably his most notable discovery? He was a paleontologist and his most notable discovery was the skeleton of a T-Rex How did Browns childhood experiences shape him as a fossil-hunting paleontologist? he mined coal and often found many small fossils such as seashells Where did Brown attend college and what did he study? University of Kansas. Paleontology and how fossil fuels were formed and mined What was browns first fossil discovery and whom was he working for at the time? The apatosaurus. The american Museum of Natural History