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Unformatted text preview: BIO M I D TER M CHEAT SHEET 1) Which of the following is a partial list of the elements which make up 98% of most living organisms? a. Calcium, carbon, sulur b. Carbon, hydrogen, oxygen c. Oxygen, phosphorous, iron d. Nitrogen, calcium, iron 2) Matter _____________. a. Is a substance which cannot be broken down into another substance by ordinar chemical means b. Is the ability to do work c. Is anything which takes up space and has mass d. Different in mass on Earth than on the moon 3) A covalent bond occurs when ______________. a. Protons are transferred from one atom to another b. Neutrons are shared between two atoms to from an isotope c. Electrons are shared between two atoms to fill valence shells d. None of the choices are correct 4) Water is a polar because of _____________. a. Transfer of electrons b. Unequal sharing of electrons c. I ts ability to freeze d. I ts hydrogen bonds 5) The pH scale is a mathematical indicator of ______________. a. The amount H + present in a solution b. The amount of OH + present in a solution c. The total amount of all ions in a solution d. The ability of a solution to buffer 6) The shape of a protein is a critical factor in its function a. T rue...
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This note was uploaded on 08/13/2010 for the course BIO BIO 213 taught by Professor O'neil during the Winter '10 term at Cal Poly.
- Winter '10