For almost one hundred years‚ we have known that the universe is expanding. We have traced this expansion back in time‚ through to the very beginning when the universe occupied an infinitesimal point in space. This was the state of the universe at time t=0‚ over 13 billion years ago. It is from this starting point that everything we are familiar with came into existence: protons‚ neutrons‚ stars‚ galaxies - even space and time itself are here. At time t=0‚ this point began an unprecedented inflation
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Virtual Lab 1: Virtual Microscopy A. Estimate the size (length and width) of these microscopic objects in micrometers (microns): 1. An E. Coli cell. 3x 0.6 μm = 1.8 μm 2 A mitochondrion. 4x 0.8 μm = 3.2 μm 3. A Red blood cell. 8 μm 4. A virus. 220 nm = 0.00022 μm 5. A water molecule. 275 pm = 0.000275 μm B. 1 Describe three differences between prokaryotic and eukaryotic cells. The three differences between prokaryotic and eukaryotic cells are: Eukaryotic cells contain a nucleus inside
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I enjoyed doing the virtual lab. I treat water as an occupation so I understood how and what to add to treat the water. If you have a low (acidic) pH then you should add sodium hydroxide. If you have total coliforms‚ you should chlorinate before and after treatment. Often‚ we test houses for total coliforms and e. coli. If the bacteria is positive‚ then we chlorinate the well. After we make sure all the chlorine is throughout the house‚ we let it sit for 24 hours to disinfect the pipes and
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Origins of the Universe 1.Identify the current theory of the formation of the universe. The big bang theory. 2.Describe the Doppler effect. The Doppler Effect is when waves moving away from you have a longer wavelength (lowpitch) and waves moving towards you have a shorter wavelength (high pitch) 3.Explain how the Doppler effect gives us information about the movement of stars andgalaxies. Stars moving away from us are red shifted (light of longer wavelength) while stars movingtowards us are
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Virtual Lab: Optimizing Photosynthesis Maria Diaz March 12‚2012 Pre-Lab Questions 1. Which two variables are controlled in a similar manner? The two variables that can be controlled in a similar manner are CO2 & the light level. 2. How can you get the results to the investigation faster? You can get the results to the investigation faster by adjusting the speed at the bottom of the water weed simulation. 3. How will you be able to determine the rate of photosynthesis
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Virtual Lab Stimulation Exercise 3 Activities 1-5 Study online at quizlet.com/_cfevi 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. An action potential is an "all-ornothing" event. Explain what is meant by this phrase. This means that once the threshold is met‚ an action potential occurs. If the stimulus is too small an action potential does not occur. An action potential is usually initiated in an axon at or near what? The axon hillock‚ the initial segment‚ and the trigger zone. The adequate stimuli
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Expiratory reserve volume decreased due to the rapid increase in breath rate. Normal resting breath rate is at an average 11.6 breaths per minute increased to 27 breaths per minute after exercise. The increase in BR causes expiration length to go below its normal 3 second interval. Therefore decreasing ERV by .6 Liters. Inspiratory reserve volume decreased due to the rapid increase in breath rate. Normal resting breath rate is at an average 11.6 breaths per minute increased to 27 breaths per
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Humans live on a small planet in a tiny part of a vast universe. "This part of the universe is called the solar system‚ and is dominated by a single brilliant star-the sun." (Skywatching 230) The solar system is the earth ’s neighbourhood and the planets Mercury‚ Venus‚ Mars‚ Jupiter‚ Saturn‚ Uranus‚ Neptune and Pluto are the Earth ’s neighbours. They all have the same stars in the sky and orbit the same sun. Scientists believe the solar system began about 5 billion years ago‚ perhaps when
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architectures Chap. 5 The Instruction Set Architecture Level Programmer’s and User’s Manual for a Processor Architecture‚ Data Types‚ Addressing and Memory Maps Instruction Formats: 0‚ 1‚ 2‚ 3‚ 4 – Address Instructions Opcode composition‚ Opcode Design (Expanding Opcodes) Addressing Modes: Immediate‚ direct‚ register‚ register indirect‚ indexed‚ based-indexed‚ stack‚ PC-Relative Instruction Types: Data Movement‚ Dyadic‚ Monadic‚ Comparisons and Conditional Branches‚ Procedure Calls‚ Loop Control‚ Input and
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Virtual Lab: Cell Cycle Lab (Onion Root Tip) In this virtual lab activity‚ you will be observing the cell cycle in the tip of an onion root. The root tip is responsible for the downward growth of the root and is one of the regions in the plant where cells are actively dividing and growing. Because of this‚ the root tip is an excellent system in which to observe the entire cell cycle‚ including the processes of nuclear division (mitosis) and cell division (cytokinesis). You will be submitting a
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