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CLEP Biology: Chemistry Of Biology

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






2. 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.






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






4. The reacting molecules of a chemical reaction.






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






6. Form components of cel membranes.






7. A reaction that requires energy






8. A single amino acid






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






10. Connected monomers (Amino Acids).






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






12. Sugar molecule in RNA






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






14. A type of carbohydrate






15. Made of Carbon - hydrogen - and oxygen. The Ratio of H and O is always 2:1. Just like water.






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






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






18. 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.






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






20. A polysaccharide made of joined glucose units. Used by many animals for short term energy. Found in muscle and liver tissue.






21. Compounds that contain carbon.






22. The building blocks of all matter.






23. A substance that changes the speed of a reaction. The catalyst is not affected at all during this reaction. All catalyst end in -ase.






24. The basic sugar unit.






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






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






27. Provide a moisture barrier.






28. A type of carbohydrate






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






30. When four or more monosaccharide's combine.






31. A reaction that produces energy






32. Sugare molecule in DNA






33. Negative charged particles of an atom. They orbit the nucleus. They have much less mass than protons and neutrons.






34. The result of a chemical reaction.






35. When threee monosaccharide's combine.






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






37. The double helix model of DNA.






38. The force of attraction between water molecules that hold them together . A weak chemical bond.






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






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






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






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






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






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






45. Contain hydrogen - oxygen - nitrogen - sulfur - phosporus - and some metal ions.






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






47. Ribonucleic acid. Generally a single strand






48. When a compund breaks apart and forms a new compund with a free reactant.






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






50. What is the strongest chemical bond?