BIO 189 csn final exam questions with correct answers

BIO 189 csn final exam questions with
correct answers


protons
positive, inside nucleus
| |




what do protons do
| | |




determine the atomic number of an element
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neutrons
neutral, inside nucleus
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what do neutrons do
| | |




determines the atomic mass of an element
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electrons

,negative, outside nucleus| |




what do electrons do
| | |




determines how/why one element interacts with another element
| | | | | | |




isotopes
elements of the same atomic number but a different atomic mass
| | | | | | | | | |




atomic number |




number of proteins an element has, determining what the element is
| | | | | | | | | |




atomic mass |




number of protons plus number of neutrons
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2 rules for electrons
| | |




like to be paired, like to be full
| | | | | | |

,ionic bond
|




complete transfer of electrons
| | |




covalent bond |




sharing of electrons: polar and nonpolar
| | | | |




polar bond
|




electrons shared unevenly
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nonpolar bond |




electrons shared evenly | |




hydrogen bond |




interaction between a negative atom with hydrogen that is already
| | | | | | | | | |



apart of a polar covalent bond
| | | | |

, weakest bond? |




hydrogen bond |




what does any property of water depend on
| | | | | | |




cohesive, difficult temp., ice floats, h bonds
| | | | | |




what are the major properties of water dependent on
| | | | | | | |




h bonds
|




carbs
twice the number of hydrogens, same number f carbon and oxygen
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sugars ie monosacc, poly sacc.
| | | |




lipids
few oxygen, ton of carbon and hydrogen. i.e) fats, oils, waxes, estrogen,
| | | | | | | | | | | |



testosterone