Biochemistry Essential Elements of Life Carbon‚ hydrogen‚ oxygen‚ nitrogen (96%) Calcium‚ phosphorus‚ potassium‚ sulphur (4%) Isotopes Atoms of an element that differ in neutrons Radioactive isotopes decay spontaneously‚ giving off energy Cohesion Hydrogen bonds hold water molecules together Adhesion is an attraction between two substances Surface tension measures how hard it is to break the surface tension of a liquid Hydrocarbons Organic molecules consisting of only carbon
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Ecology Unit Study Guide AP Biology Study Guide: Read through these concepts. If you are not sure of what the concept is or means search for the answer in your textbook and write it on a separate sheet of paper. If you know these terms you should do well on the test. Chapter 52 – Ecology and the Biosphere 1. Distinguish among the following types of ecology: organismal‚ population‚ community‚ ecosystem‚ and landscape. 2. Explain how dispersal may contribute to a species’ distribution.
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a) The ATP molecule is composed of three components. At the centre is a sugar molecule‚ ribose (the same sugar that forms the basis of RNA). Attached to one side of this is a base (a group consisting of linked rings of carbon and nitrogen atoms); in this case the base is adenine. The other side of the sugar is attached to a string of three bonded phosphate groups. These phosphates are the key to the activity of ATP. Especially‚ the bond between the last phosphate and second to last phosphate is
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are called ATP (Adenosine
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Title: Grass Growth Effect Jessica Suarez Option A: Observation: During the winter‚ you spread salt daily on your driveway to melt the snow. In the springtime‚ when the lawn begins to grow‚ you notice that there is no grass growing for about 3 inches from the driveway. Furthermore‚ the grass seems to be growing more slowly up to about 1 foot from the driveway. Question: Might grass growth be inhibited by salt? My hypothesis is that the grass growth in being inhibited by salt. A typical
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Reflection: SS Chapters 6 & 7 I believe that there is much that we take for granted in our world today. One of these things we take for granted in the instant “treatment” for plants. We do so without even a second thought or consideration and continue to let it happen year after year. We also take for granted our everyday dependencies that stem from nature. I then question what it would take for us to realize our dependency on nature and to respect it as such. On page 73 of the reading‚ it discusses
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take the food humans ingest and turn it into energy that can be used by the body in the form of ATP‚ also known as‚ adenosine triphosphate. The creation and distribution of ATP is vital to humans and their survival on earth simply because ATP is the energy bodies use in order to continue the tasks they need to keep the human body functioning. The overall goal of cellular respiration is to create ATP. In doing so‚ there
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Diffusion of Cell Size 2012 Kayla Szabo Loxton High School 2/20/2012 Rate of Diffusion Practical report Introduction: Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. Cells need to utilise diffusion to exchange materials from outside of the cell to the inside of the cell for them to survive. Diffusion is a passive process‚ which means it doesn’t involve the need of energy. For a cell to survive it relies greatly on its size
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Jan. 24th • No one sit in last 3 rows of seats • Drop-‐in 2me – cancelled next Wed. Jan. 29th • Will have on Thurs. Jan. 30th 10-‐11:30 am • Quiz 3 – Natural SelecAon • Ch. 3: 3.3‚ 3.4‚ 3.5; Ch. 4: 4.2 • Simbio – will receive registraAon email • Midterm 1 – 2 weeks
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ESSAY PRACTICE Cycles in Biology A cycle can be defined by a series of repeated steps that produce an end product which is the same as the start product. There are many cycles in biology including cycles that occur inside organisms such as the cardiac cycle‚ calvin cycle and the krebs cycle. There are also biological cycles that occur around us in the outside world such as the carbon cycle and the nitrogen cycle. I have decided to focus my essay on the biological cycles that occur inside
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