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






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






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






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






5. 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.






6. A reaction that requires energy






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






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






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






10. Connected monomers (Amino Acids).






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






12. Ribonucleic acid. Generally a single strand






13. When threee monosaccharide's combine.






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






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






16. Sugar molecule in RNA






17. Long term energy storage.






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






19. A reaction that produces energy






20. What is the strongest chemical bond?






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






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






23. The basic sugar unit.






24. When four or more monosaccharide's combine.






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






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






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






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






29. A single amino acid






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






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






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






33. The result of a chemical reaction.






34. The double helix model of DNA.






35. Sugare molecule in DNA






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






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






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






39. The building blocks of all matter.






40. A type of carbohydrate






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






42. Compounds that contain carbon.






43. Form components of cel membranes.






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






45. Provide a moisture barrier.






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






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






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






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






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