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CLEP Biology: Organic Chemistry

Subjects : clep, science, biology
  • Answer 50 questions in 15 minutes.
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  • Match each statement with the correct term.
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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. The attractive force between similar molecules in the same phase.

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

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

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

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

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

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

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

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

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. 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.

13. A group of at least two covalently bonded atoms

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

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

16. 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.

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

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

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

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

21. Tentative - untested explanation of a scientific issue.

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

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

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

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

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

27. An uncharged subatomic particle located in the nucleus.

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

29. A bond whose electrons are shared between atoms.

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

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

32. A compound that contains carbon.

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

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

35. Occurs when there is?

36. Three roles of Macromolecules.

37. The fundamental unit of chemical matter.

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

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

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

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

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

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

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

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

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

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

48. Group of Macromolecules that Includes Triglycerides and Phospholipids.

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

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