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






2. When four or more monosaccharide's combine.






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






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






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






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






7. 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.






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






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






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






11. A type of carbohydrate






12. Compounds that contain carbon.






13. Connected monomers (Amino Acids).






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






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






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






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






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






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






20. Provide a moisture barrier.






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






22. The building blocks of all matter.






23. What is the strongest chemical bond?






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






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






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






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






28. The basic sugar unit.






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






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






31. The double helix model of DNA.






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






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






34. A type of carbohydrate






35. Neutral charged particles in the nucleus of an atom.






36. Ribonucleic acid. Generally a single strand






37. 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.






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






39. Form components of cel membranes.






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






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






42. A reaction that produces energy






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






44. When threee monosaccharide's combine.






45. A reaction that requires energy






46. When compounds combine.






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






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






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






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