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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. That matter and energy is neither created nor destroyed.






2. The double helix model of DNA.






3. 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.






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






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






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






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






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






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






10. A single amino acid






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






12. 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






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






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






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






16. When threee monosaccharide's combine.






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






18. Connected monomers (Amino Acids).






19. The reacting molecules of a chemical reaction.






20. When compounds combine.






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






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






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






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






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






26. A type of carbohydrate






27. A type of carbohydrate






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






29. 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.






30. What is the strongest chemical bond?






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






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






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






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






35. A reaction that requires energy






36. Sugare molecule in DNA






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






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






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






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






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






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






43. Provide a moisture barrier.






44. Long term energy storage.






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






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






47. Compounds that contain carbon.






48. Sugar molecule in RNA






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






50. The building blocks of all matter.