The mesopelagic zone extends from about 200 m to about: (10 points) a. 300 m b. 500 m c. 1‚000 m d. 2‚000 m e. 4‚000 m The water below the oxygen minimum layer has: (10 points) a. no oxygen at all b. only very small traces of oxygen c. some of the oxygen it had when it left the surface d. most of the oxygen it had when it left the surface The zone immediately below the bathyal zone is called the: (10 points) a. abyssal b. hadal
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have a little bit of color missing. 2. The egg remains firm. 3. 15.5cm 4. 48 1. The eggs shell is beginning to disappear. 2. The shell of the egg is cracking all around. 3. 16 and ¼cm 4. 72 1. The shell is completely gone‚ leaving a thin membrane that surrounds the yolk. 2. The egg itself looks flimsy and appears transparent. 3. 17cm Conclusion: Be sure to answer the following reflection questions in the conclusion of your lab report: 1. How much did the egg change in size? (answer
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Cell Fractionation: Isolation of Mitochondria from Cauliflower and Determination of Specific Enzyme Kinetics Introduction Mitochondria is an organelle found in eukaryotic cells that play a role in biochemical processes such as respiration and energy production. Mitochondria even play an important role in apoptosis‚ or programmed cell death. This is achieved by disruption of electron transport‚ oxidative phosphorylation‚ and ATP production or even the release of proteins that trigger activation
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Origin of Life 1. The four stages of hypothesis for the origin of life on Earth by chemical evolution is * Abiotic synthesis of small organic molecules * The joining of small molecules into macromolecules * Packaging of these molecules into protobionts * The origin of self replicating molecules that made inheritance possible. 2. A.I. Oparin‚ and J.B.S. Haldane hypothesized a reducing environment. Stanley Miller and Harold Urey did lab experiments that showed that the abiotic
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light microscope when you want to see the cell in the act of moving or dividing. 2. Prokaryotic cells don’t have organelles like eukaryotic cells do. Eukaryotic cells contain its DNA within its nucleus‚ while prokaryotic cells keep it within the nucleoid. Prokaryotic cells are also more minute than the eukaryotic cells. Also although they both contain ribosomes‚ they are composed differently. 3. The central vacuole (takes in water and chemicals)‚ cell wall (allows the plant to be strong enough
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Science 9-Biology Observing Cell Division Lab Purpose: To use the microscope to observe and sketch plant cells and animal cells in various stages of the cell cycle. Equipment and Materials: Compound Microscope Laptops Prepared Slide of Onion (Allium) Root Tips Prepared Slide of Whitefish Mitosis BC Science 9 Text pg. 162-163 Part 1-Plant Cells Procedure: 1. Take a prepared slide of an onion tip root and observe it under low power
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LIVING THINGS * All living things come from other living things. * Ex: One single celled organism to another * DNA is copied & passed to offspring * The signature molecule of life * Ex: embryo- cells continually divide & develop EVOLUTION * Why do some organisms seem suited for their environment * Ex: Hummingbird- long beak for nectar in certain flowers * Ex: Cheetahs- take down faster prey * Adaptation- inherited characteristic that
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support‚ move‚ and protect the body; they also give us our features. But without bone cells we would have no bones. Bone cells are the living units that make up your bones and keep them functioning. Bone cells have two major roles‚ which are the production of new bones and resorption or destruction of old bone. They also carry out other small roles. There are four main types of bone cells: Osteogenic‚ which are bone cells that respond to traumas‚ osteoblasts‚ which form bone matrix around themselves by
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products are stored in different parts of the cell so it is not as easy to activate the cyanide. Since the cyanide requires two gene products to work if they are stored in different areas it is harder to get the two and therefore activate the powerful poison. Only under certain conditions will cyanide be activated. b. One of the ways that the two products could come together to make an active CN is when there is below freezing temperature‚ the plant cell membranes can burst. Then the two gene products will
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CELL THEORY – STEM CELLS Stem cells are a large focus of study in today’s biomedical world. “They are cells that exist in an undifferentiated state‚ and transform into differing tissue types depending on what the cells surrounding them are‚“ (National Institute of Health‚ 2012). Stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition‚ they also serve as an internal repair mechanism inside many tissues‚ dividing without
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