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






2. Occurs when there is?






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






4. A group of at least two covalently bonded atoms






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






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






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






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






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






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






11. 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.






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






13. An uncharged subatomic particle located in the nucleus.






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






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






16. Tentative - untested explanation of a scientific issue.






17. 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.






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






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






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






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






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






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






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






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






26. Very large molecules with molecular masses as high as several million atomic mass units. Polymers of small similar molecules. Includes Polysaccharides - fats - and proteins.






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






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






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






30. A form of matter tha cannot be decomposed into simpler substance by ordinary chemical methods.






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






32. A compound that contains carbon.






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






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






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






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






37. A bond whose electrons are shared between atoms.






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






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






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






41. 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






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






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






44. 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. -






45. 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.






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






47. The study of life and living organisms. A problem solving process.






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






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






50. Three roles of Macromolecules.