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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. Tentative - untested explanation of a scientific issue.






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






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






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






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






6. Occurs when there is?






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






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






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






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






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






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






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






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






15. 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.






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






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






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






19. 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.






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






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






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






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






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






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






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






27. Three roles of Macromolecules.






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






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






30. A compound that contains carbon.






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






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






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






34. Group of Macromolecules that Includes Triglycerides and Phospholipids.






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






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






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






38. A group of at least two covalently bonded atoms






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






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






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






42. 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. -






43. The fundamental unit of chemical matter.






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






45. 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.






46. A bond whose electrons are shared between atoms.






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






48. 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






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






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