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






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






3. A type of carbohydrate






4. A reaction that produces energy






5. A reaction that requires energy






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






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






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






9. When four or more monosaccharide's combine.






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






11. Provide a moisture barrier.






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






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






14. A type of carbohydrate






15. 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






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






17. Two or more atoms held together by a covalent bond.






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






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






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






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






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






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






24. A single amino acid






25. Compounds that contain carbon.






26. The double helix model of DNA.






27. Sugare molecule in DNA






28. The building blocks of all matter.






29. When threee monosaccharide's combine.






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






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






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






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






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






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






36. What is the strongest chemical bond?






37. Sugar molecule in RNA






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






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






40. Ribonucleic acid. Generally a single strand






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






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






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






44. Form components of cel membranes.






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






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






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






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






49. 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.






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