Chem_and_Water

Chem_and_Water - Practice Questions: Practice What is the...

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Practice Questions: Practice Questions:
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What is the name of your teacher? What is the name of your teacher? A. Dr. Pepper B. Mr. Pibb C. Captain Insano D. Mr. Arigoni E. I don’t know.
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Polysaccharides are broken into Polysaccharides are broken into maltose and other disaccharides in maltose and other disaccharides in the lumen of the small intestine by: the lumen of the small intestine by: A. Pancreatic nucleases B. Pancreatic lipase C. Pancreatic carboxypeptidase D. Pancreatic amylases E. I have no idea what you’re talking about.
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Chemistry Review Chemistry Review Chapter 4 Chapter 4
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What Makes Up an What Makes Up an Atom Atom ? ? Nucleus contains protons and neutrons Protons positively charged Neutrons no charge Electrons negatively charged; move in regions outside of the nucleus Atoms
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Generalized Structure of an Atom Generalized Structure of an Atom electron nucleus proton HYDROGEN Atomic Structure
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Atoms Make Elements Atoms Make Elements Atom smallest particle of an element that retains the characteristics of that element ex. carbon atoms in a diamond give the diamond its hardness and light refracting properties all elements are made of atoms Atoms
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Most Common Elements in Most Common Elements in Living Organisms Living Organisms Oxygen Hydrogen Carbon Nitrogen However trace elements are very important
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Isotopes Isotopes Atoms of an element with different numbers of neutrons (different mass numbers) Carbon 12 has 6 protons, 6 neutrons Carbon 14 has 6 protons, 8 neutrons
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Radioisotopes Radioisotopes Have an unstable nucleus that emits energy and particles Radioactive decay transforms radioisotope into a different element Decay occurs at a fixed rate
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Radioisotopes as Tracers Radioisotopes as Tracers Tracer is substance with a radioisotope attached to it Emissions from the tracer can be detected with special devices Following movement of tracers is useful in many areas of biology
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This note was uploaded on 10/12/2011 for the course BIO 101 taught by Professor Martin during the Spring '08 term at Rutgers.

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Chem_and_Water - Practice Questions: Practice What is the...

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