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






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






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






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






5. Sugare molecule in DNA






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






7. When four or more monosaccharide's combine.






8. A reaction that produces energy






9. The basic sugar unit.






10. Form components of cel membranes.






11. Long term energy storage.






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






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






14. 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






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






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






17. The double helix model of DNA.






18. Connected monomers (Amino Acids).






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






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






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






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






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






24. Sugar molecule in RNA






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






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






27. What is the strongest chemical bond?






28. 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.






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






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






31. A reaction that requires energy






32. When compounds combine.






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






34. The result of a chemical reaction.






35. A single amino acid






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






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






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






39. Compounds that contain carbon.






40. The reacting molecules of a chemical reaction.






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






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






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






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






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






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






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






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






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






50. The building blocks of all matter.