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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 bond that holds monmers together to form polymers.






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






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






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






5. Connected monomers (Amino Acids).






6. 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.






7. When four or more monosaccharide's combine.






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






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






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






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






12. A type of carbohydrate






13. The basic sugar unit.






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






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






16. A type of carbohydrate






17. Provide a moisture barrier.






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






19. 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.






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






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






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






23. Long term energy storage.






24. The result of a chemical reaction.






25. Form components of cel membranes.






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






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






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






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






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






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






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






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






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






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






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






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






38. A reaction that produces energy






39. 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






40. Compounds that contain carbon.






41. The building blocks of all matter.






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






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






44. When compounds combine.






45. When threee monosaccharide's combine.






46. A single amino acid






47. What is the strongest chemical bond?






48. Sugare molecule in DNA






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






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