Chapter 3: The Multiple Choice 1. a. b. c. d. e. 2. a. b. c. d. e. 3. a. b. c. d. Cellular Level of Organization What are the three main parts of a eukaryotic cell? Plasma membrane‚ organelles‚ cytoplasm Plasma membrane‚ organelles‚ nucleus Plasma membrane‚ cytoplasm‚ organelles Plasma membrane‚ cytoplasm‚ nucleus Plasma membrane‚ cytosol‚ organelles Plasma membranes consist of what three components? Phospholipids‚ glycoproteins‚ water Proteins‚ cholesterol‚ fatty acids Cholesterol‚ fatty acids
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Aerobic respiration in yeast Research question: What was the effect of anaerobic respiration in different environments determined the increase in size of a dough by the temperature? Hypothesis: It is hypothesized that if the temperature increases the dough will become bigger and bigger. Independent variable: (change) • Temperature • Height of the dough Dependent variable: (doesn’t change) • Amount of vegetable oil • Time • Volume of yeast solution Control variables: Variable
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21: The Immune System: Innate and Adaptive Body Defenses Objectives PART 1: INNATE DEFENSES Surface Barriers: Skin and Mucosae 1. Describe surface membrane barriers and their protective functions. Internal Defenses: Cells and Chemicals 2. Explain the importance of phagocytosis and natural killer cells in innate body defense. 3. Describe the inflammatory process. Identify several inflammatory chemicals and indicate their specific roles. 4. Name the body’s antimicrobial substances and describe
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Sang Kim Enzyme Catalyst Purpose/Problem: There are four parts to the Enzyme Catalyst lab - Activity A‚ B‚ C‚ and D. In activity A‚ the characteristics of enzyme actions will be observed. The main purposes are to determine the rate of an enzyme catalyzed reaction‚ to study the characteristics of an enzyme mediated reaction‚ and to observe the effect of heat on enzyme activity. The purpose of activity B is to use the Titration Protocol to determine the initial amount of H 2O2 present
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DIFFUSION= The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion. OSMOSIS= Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane. SELECTIVE PERMEABLE MEMBRANE=a membrane (as a cell membrane) that allows
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vegetated areas (covered with plants)‚ especially of Australia - work together or affect by each other - how much of it there is in each place or at each time - non-living things / living thins + PHOTOSYNTHESIS AND RESPIRATION What is photosynthesis? What is respiration? Relationships ? The process by which plant cells capture energy from sunlight and use it to combine carbon dioxide and water to make sugars and oxygen. 6CO2 + 12H2O C6H12O6 + 6O2+6H2O Carbon dioxide +
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Cellular organelle structure and function Nucleus The Nucleus is comprised of the pore perforated nuclear membranes‚ nucleoplasm‚ chromatin and the nucleolus at the core. The nuclear envelope consists of an inner and outer membrane that forms the outer structure. Contained within the nuclear membrane are nucloplasm which is the fluid medium in which the chromatin is present‚ chromatin being the genetic material. At the core of the nucleus is the nucleolus‚ where ribosomes are synthesized. The
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Erasistratus’s model of the respiration and blood distribution is considerably more mechanical than Aristotle’s due to the technological advances that were thriving in Alexandria compared to Athens. Both scientists base their models of respiration and blood distribution in the body from technological-ladenness of observation. Erasistratus proposes that heart uses force propulsion to distribute air and blood throughout the arteries and veins. His concept focuses on “the filling towards what is being”
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acid solution would be titrated by slowly adding drops of solution into NaOH‚ and the volume of base needed to react with the acid is measured throughout. By using those data‚ the students are able to find what they were trying to calculate. On this lab‚ the students found the unknown acid‚ 4.36 x 10-5‚ and the equivalence point of 8.4‚ as well as the value of pH. Purpose: The purpose of the experiment was to utilize the techniques of titrations to measure the concentration of an acid or base in
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known as germ warfare — is the deliberate use of disease-causing biological agents such as bacteria‚ viruses‚ fungi‚ or biological toxins‚ to kill or incapacitate humans‚ animals or plants as an act of war. Biological weapons (often termed "bio-weapons" or "bio-agents") are living organisms or replicating entities (viruses) that reproduce or replicate within their host victims. Entomological (insect) warfare is also considered a type of BW. Biological weapons may be employed in various ways to
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