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CLEP Biology: Organic Chemistry

Subjects : clep, science, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Very large molecules with molecular masses as high as several million atomic mass units. Polymers of small similar molecules. Includes Polysaccharides - fats - and proteins.






2. A process in which a substance or substances are converted into one or more new substances with different propertied and composition.






3. Where two molecules are joined by the elimination of a smaller molecule.






4. An atom's center of mass and center of positive charge.






5. A positively charged subatomic particle located in the nucleus.






6. A bond whose electrons are shared between atoms.






7. A statistical comparison of two variables. Does not necessarily mean that one causes the other.






8. A substance composed of two or more elements combined in fixed proportions.






9. A compound containing a nitrogenous base covalently bonded to a pentose sugar and a phosphate group. Classified by the pentose sugar they contain - Ribose or Deoxyribose.






10. Occurs when there is?






11. Biological compounds containing and amino group and a carboxylic acid group.with one of 20 side chains.






12. The main oxygen transport protein in blood. Made of two alpha chains and two beta chains.






13. An uncharged subatomic particle located in the nucleus.






14. Group of Macromolecules that Includes Triglycerides and Phospholipids.






15. One of the most abundant carbohydrates providing either energy storage or structural support. Polymers of 10 or more simple sugars - composed of thousands of monomers and up to 100M molecular mass.. Includes Cellulose in plants and Chitin animals wit






16. Used by organisms to produce energy - Most common form is glucose. Also includes Fructose and - less commonly - Ribose - and Deoxyribose.






17. A compound containing a nitrogenous base covalently bonded to a pentose sugar






18. The six elements that make up 99% of the matter in living systems.






19. State problem - refine the problem - propose hypothesis - make observations -






20. The energy needed to increase the surface area of a liquid by a given amount.






21. The attractive force between similar molecules in the same phase.






22. A specific combination of bonded atoms that reacts in a characteristic and predictable way. Examples are Ethers and Alchohols which are represented by a generic molecule. Includes Alchohol - Ether - Aldehyde - Ketone - Carboxylic Acid - and Ester. -






23. An expression indicating the number of each type of atom in one molecule of a substance.






24. A collection of organisms whose members interact with each other within an ecosystem.






25. All organisms in an area together with the physical environment which they inhabit.






26. A liquid which dissolves another substance without any change in its chemical composition.






27. Occurs when one atom in a bond is more electronegative than the other.






28. Atoms of the same element with different number of neutrons in the nuclei.






29. A chemical bond formed by the attraction between positive and negative ions.






30. A weak to moderate attractive force between a hydrogen atom bonded to oxygen - nitrogen - or fluorine - and an oxygen - nitrogen or fluorine atom on another molecule. Usually represented by dotted lines.






31. A compound that contains carbon.






32. Three roles of Macromolecules.






33. The attractive force between molecules in one phase and different molecules in another phase.






34. Have ths same molecular formul;a but different chemical and physical properties. The atoms are bonded in a different order. Some hydrocarbons are an example of Isomers.






35. The act or process of causing something to happen -






36. The tendency of an atom in a bond to attract shared bonding electrons.






37. The amount of heat needed to raise the temperature of a 1 gram sample of a substance by 1 degree Celsius.






38. A chemical reaction produces energy when the difference between the reactants and the products is ____________zero.






39. A condition or state in which a substance has an uneven distribution of electron density. Enables compounds to dissolve and enables hydrogen bonding.






40. An attractive forve between tow or more atoms or ions that holds them together.






41. Basic biological molecules join to form larger biological __________.






42. Macromolecules made from polypeptides. Two type are globular and fibrose.






43. A charged species that results from the gain or loss of electrons from a neutral atom or molecule.






44. The fundamental unit of chemical matter.






45. The main oxygen carrying protein in blood. Globular.






46. A negatively charged subatomic particle located outside the nucleus.






47. The main oxygen transport protein in muscle. Made of a single chain.






48. Tentative - untested explanation of a scientific issue.






49. Gradual process by which something changes into a different and usually more complex form.






50. Organ systems are made of organs which are made of _____________ which are made of cells.