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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. The result of a chemical reaction.






2. Long term energy storage.






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






4. A reaction that produces energy






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






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






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






8. The basic sugar unit.






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






10. Compounds that contain carbon.






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






12. When compounds combine.






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






14. A reaction that requires energy






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






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






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






18. A single amino acid






19. The double helix model of DNA.






20. A type of carbohydrate






21. Provide a moisture barrier.






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






23. The building blocks of all matter.






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






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






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






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






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






29. When four or more monosaccharide's combine.






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






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






32. When threee monosaccharide's combine.






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






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






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






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






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






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






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






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






41. 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.






42. Connected monomers (Amino Acids).






43. What is the strongest chemical bond?






44. 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






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






46. Sugar molecule in RNA






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






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






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






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