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CLEP Biology: Chemistry Of Biology

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. A chemical that donates protons when dissolved in water. Below 7 on the pH scale

2. The building blocks of all matter.

3. A chemical bond between atoms when they share electrons between their valence shells. These are the strongest chemical bonds.

4. All reaction spread energy which tend to diminish it's availability.

5. Form components of cel membranes.

6. When compounds combine.

7. A chemical that accepts protons when dissolved in water. Above 7 on the pH scale.

8. A substance that can't be broken down into any other substance. The simplest form of an element is an atom.

9. Deoxyribonucleic acid. Two strands that pair up via a hydrogen bond. They form a double helix shape.

10. Center of an atom. The number of protons in the nucleus is the same as the atomic number on the periodic table of elements.

11. In every living cell. Large chains of amino acids.

12. An atom that has the same number of protons and electrons.

13. That matter and energy is neither created nor destroyed.

14. Most common starch in a plant cell. It is a long chain of water insoluable polysaccharides

15. Organic compound made of carbon - hydrogen and oxygen. Ratio of H to O is alway greater than 2:1. Includes waxes - steroids - phospholipids - and fats.

16. When positive and negative ions are attracted to each other. Weaker than a covalent bond. Table salt is an ionic bond.

17. Contain Carbon - Hydrogen - Oxygen - Nitrogen - and sometimes sulfur and phospoirus. 20 common amino acids that make thousands of different proteins.

18. Another name for proteins. Nameds this because of the peptide bonds that monomers use to connect together.

19. A charged atom. More protons that electrons makes a positive ion and more electrons than protons makes a negative ion.

20. A type of carbohydrate

21. Monomers that form nucleic acids. Each one has a sugar group and a phosphate group with a nitrogen base.

22. A special protein. It functions as a catalyst for reactions

23. DNA and RNA. These are polymers (proteins)

24. Results of the structure of atoms and their interactions with each other.

25. When four or more monosaccharide's combine.

26. Positive charged particles in the nucleus of an atom.

27. The bond that holds monmers together to form polymers.

28. The reacting molecules of a chemical reaction.

29. The amount of energy in a electron cloud. The weakest level is the shell closest to the nucleus. As the shell gets stronger more electrons may fill it. Electron fill the shell closest to the nucleus.

30. When two monosaccharide units form together. Glucose and fructose make table sugar. A water molecule is liberated when one is formed.

31. The last shell of the electron cloud. Atoms are more stable when this shell is full.

32. A single amino acid

33. Compounds that contain carbon.

34. A polysaccharide. Plant's store starches in their cell's for future energy. Also used for structure in a plant's cell. The most common is cellulose

35. When two or more atoms form a unique substance via a chemical bond. Water is an example.

36. The basic sugar unit.

37. Acids and bases. When combined in water they produce water and a salt (ionic compound)

38. Provide a moisture barrier.

39. Sugare molecule in DNA

40. Molecules that have regions of a partial charge. Water molecules have a positive hydrogen charge.

41. When threee monosaccharide's combine.

42. In a chemical reaction when a compound breaks down into components

43. Long term energy storage.

44. The result of a chemical reaction.

45. When two or more molecules react with each other to form one or more moleculte types.

46. Six carbon sugars. The most commone monosaccharide. They are usually ring shaped.

47. Also referred to as the electron shell and orbital. It is the 3 dimensional space that electron orbit the nucleus.

48. A compund that is able to dissolve many types of organic and inorganic compunds

49. This is a catlyst. All catalysts end with this.

50. Sugar molecule in RNA