CP_Bio_-_midterm_review_2008-09 - Study Guide CP Biology...

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Study Guide CP Biology Midterm January 2009 Chapter 1-2 Section 1:1. Know all different levels of organization (and definitions) starting at biosphere all the way to DNA What is the scientific definition of a species? (see your notes) What is the role of DNA for an organism? Section 1:3 In notes, review characteristics shared by all living things know difference between growth and development define consumer, producer and decomposer General Lab Info Make sure you know the difference between an experimental group and a control group (be able to identify which is which in an experiment) What is a variable? Can a hypothesis or a theory be changed over time? Review the analysis section of your checks lab. Chapter 4 Section 1 What is an element? What are the 4 most abundant elements in your body? Why are “trace elements” important for your health? What is the difference between an element and a compound? Give 2 examples of compounds. Section 2 Define “atom”. An atom is made of 3 types of subatomic particles: _________ are positively charged; _________ are negatively charged; _________ do not have an electrical charge Where is most of the mass of an atom located?____________ Look at the model of a helium atom p.75 and fill-in the blanks: The nucleus is made of ________ and ___________. The __________ are located on the outside in a _________ (called energy levels in chemistry class) Any atom of helium always has the same number of _____. This number is the ___ ___ Look at the periodic chart in your agenda. What is the atomic number of calcium? Assume a calcium atom has not lost nor gained electrons and is therefore neutral. How many protons does it have? _________ How many electrons does it have? _______ Read p.76. Compare and contrast the 3 isotopes of carbon shown: Do all 3 isotopes have the same number of protons?______ Do they have the same number of electrons?________ Do they have the same number of neutrons?_______ How many protons, neutrons and electrons are there in an atom of oxygen-18? Define radioisotope and explain how they are useful in biology. Read the paragraph “Electrons and Reactivity” p.77. When atoms react with each other to form ionic compounds or molecules, which electrons are involved in the reaction?
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Section 3 Ionic bonds involve the ____ of electrons between 2 atoms. In a covalent bond electrons are ___ between atoms. When 2 or more atoms are held together by covalent bonds, a _________ results. Use a periodic chart to determine the number of valence electrons in: hydrogen, carbon, nitrogen, oxygen. How many covalent bonds does each of the 4 atoms form? Section 4
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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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CP_Bio_-_midterm_review_2008-09 - Study Guide CP Biology...

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