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McGeorge Biology
study guide for the final
| Question | Answer |
|---|---|
| What is the charge of an electron? | negative |
| What is the charge of a neutron? | neutral |
| what is the charge of a proton? | positive |
| An ion is formed when an atom ____ or ____? | gains or looses |
| if an atom gains electrons, then the overall charge will be? | negative |
| if an atom looses electrons, then the overall charge will be? | positive |
| define: covalent bond | two atoms that share electrons |
| define: ionic bond | transfer of electrons formed between two atoms of opposite charge |
| define: hydrogen bond | forms between two polar molecules linked atoms |
| which bond is the strongest? | covalent |
| which bond is the weakest? | hydrogen |
| which bond is betwen atoms? | covalent |
| which bond is betwwen molecules? | hydrogen |
| what does it mean when water is polar? | the water has a negative and positive charge |
| define: cohesion | when water sticks to itself |
| define: adhesion | when water sticks to other objects |
| give an example of cohesion | water to water |
| give an example of adhesion | water to paper towel |
| substances that release H+ ions are? | acids |
| substances that release OH- ions are? | bases |
| what does pH measure? | the amount of H+ ions |
| How do acids and bases differ in terms of H+ ion concentrations? | acids have H+ ions, bases don't |
| what is the monomer of a carb? | glucose |
| what is the monomer of a lipid? | fatty acids |
| what is the monomer of a protein? | amino acids |
| how many calories per gram are there for a carb? | 4 c/g |
| how many calories per gram are there for a lipid? | 9 c/g |
| how many calories per gram are theer for a protein? | 4 c/g |
| Which of the carbs above is used for structural supportt in planys? | cellulose |
| which one is stored in plants? | starch |
| which carb is stored in animals? | glycogen |
| which type of food gives you the quikest energy? | carbs |
| which food gives you the most energy? | lipids |
| which food type is the body's last resort for energy? | protein |
| what elements are found in carbs? (ratio) | 1:2:1, carbon hydrogen oxygen |
| what elements are found in proteins? | carbonn hydrogen oxygen nitrogen |
| what elements are found in lipids? | carbon hydrogen oxygen |
| Why is it important that the largest trophic level consist of producers? | because they ahve to start out with the most energy |
| commensalism is what kind of relationship? | + 0 |
| what kind of relationship is mutualism? | + + |
| what type of relationship is parasitism? | + - |
| what type of relationship is predator/prey | + - |
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