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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. When threee monosaccharide's combine.






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






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






4. 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






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






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






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






8. The reacting molecules of a chemical reaction.






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






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






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






12. A type of carbohydrate






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






14. Compounds that contain carbon.






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






16. A reaction that requires energy






17. When four or more monosaccharide's combine.






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






19. Provide a moisture barrier.






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






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






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






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






24. Long term energy storage.






25. When compounds combine.






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






27. 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.






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






29. Connected monomers (Amino Acids).






30. A single amino acid






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






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






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






34. The building blocks of all matter.






35. 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.






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






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






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






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






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






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






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






43. The double helix model of DNA.






44. The result of a chemical reaction.






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






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






47. Sugare molecule in DNA






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






49. A reaction that produces energy






50. The basic sugar unit.