heat for the early Earth? a. meteor bombardment b. gravitational contraction c. radioactivity d. hydrothermal energy 3. What are small asteroids called? a. comets b. meteoroids c. cratons d. microcontinents 4. What is the process by which a planet becomes internally zoned when heavy materials sink toward its center and lighter materials accumulate near its surface? a. photosynthesis b. dewatering c. accretion d. differentiation 5.
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Chapter 4- Sensation and Perception * Sensation vs. Perception * Sensation- Basic processes by which sensory receptors and the nervous system: Receive and represent stimulus energies from environment‚ and entails basic psychological experiences. * Bottom-Up Processing- Sensory detection and encoding; construction of whole from parts. * This includes Lines‚ shapes‚ angels‚ colors‚ items/events that grab our attention * Perception- Interpretation and integration
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OSMOSIS LAB BACKGROUND INFORMATION. Dialysis tubing is being used to model a plasma membrane. Isotonic solutions are solutions that have the same concentration of solutes on both sides of the membrane. Hypertonic solutions are solutions that have more solute to the one with less solute. Hypotonic solution are solutions that have less solute to the one with more solute. RESEARCH QUESTION:which dialysis tubing will gain the distilled water and which one will loss its content
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out‚ comes in and leaves as heat 3. What are the 4 most important elements in the human body? C‚ O‚ N‚ H 4. Draw the periodic square for Helium. How many valence electrons does it have? How do you figure this out using the periodic table? Two valence e-‚ 23He‚ all the way right full shell only holds two electrons 5. What is an isotope? How are they used? Different number of neutrons‚ used in biological research (radioactive) 6. Describe the 4 main types of bonds. Put them in order from strongest
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3.52 Tell whether the following pairs of compounds are identical‚ constitutional isomers or stereoisomers: (a) Cis-1‚ 3-dibromocyclohexane and trans-1‚ 4-dibromocyclohexane (b) 2‚3-dimethylhexane and 2‚5‚5-trimethylpentane (c) Cl Cl Cl Cl and Solution: (a) (b) (c) Constitutional isomers Constitutional isomers Identical a) Solution: Draw two constitutional isomers of cis-1‚2-dibromocyclopentane
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Chapter 4 Outline I. Ancient Iran Iran’s mineral resources copper‚ tin‚ iron‚ gold‚ and silver were exploited on a limited scale in antiquity Mountain slopes‚ more heavily wooded. A. Geography and Resources Iran is by the Zagros Mountains to the west‚ the Caucasus Mountains and Caspian Sea to the northwest and north‚ the mountains of Afghanistan and the desert of Baluchistan to the east and southeast‚ and the Persian Gulf to the southwest. Humans trying to survive in these harsh lands had
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Biology Revision summer 2012 1-Characteristics of living organisms Nutrition- taking in of nutrients which are organic substances and mineral ions ‚ containing raw materials or energy for growth and tissue repair ‚ absorbing and assimilating them . Excretion- the removal from organisms of toxic material‚ the waste products of metabolism and substances in excess of requirement . Respiration- the chemical reactions that break down the Sensitivity- The ability to detect or sense changes in the
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guard cell swells or shrinks due to the gain or loss of water‚ the thickened wall is the only one to maintain its form. Consequently when the guard cells shrink‚ they shift towards each other‚ closing the stomata. Water enters the guard cells by osmosis. The amount and direction of movement of water is influenced by several factors‚ one of which is light. Light has an indirect effect. The guard cells of stomata through which most water loss comes about by transpiration are sensitive to light
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about freezing points. This lab was designed to show us the freezing point of a pure solvent‚ in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment‚ we got to observe osmosis as well as understand dialysis. Procecure : Part 1. Colligative Properties 1. Create a water bath by filling ½ of the 100 mL beaker with cool water‚ adding crushed ice to the beaker so the water level is just
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Osmosis The purpose of this lab is to study how membranes of plant and animal cells react when exposed to different solutions. The first experiment involves purple onion skin and the second involves rat blood in various solutions. I needed to understand certain terms before preforming this lab to be able to efficiently explain what is happening to the cells. Diffusion is the tendency of a substance to move down its concentration gradient from a more concentrated to a less concentrated area.
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