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






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






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






4. An uncharged subatomic particle located in the nucleus.






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






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






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






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






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






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






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






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






13. A bond whose electrons are shared between atoms.






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






15. Tentative - untested explanation of a scientific issue.






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






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






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






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






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






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






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






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






24. Three roles of Macromolecules.






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






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






27. Occurs when there is?






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






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






30. 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






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






32. A group of at least two covalently bonded atoms






33. A compound that contains carbon.






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






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






36. 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.






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






38. Group of Macromolecules that Includes Triglycerides and Phospholipids.






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






40. 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.






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






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






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






44. The fundamental unit of chemical matter.






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






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






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






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






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






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