Test your basic knowledge |

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 double helix model of DNA.






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






3. The result of a chemical reaction.






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






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






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






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






9. Sugare molecule in DNA






10. A reaction that produces energy






11. What is the strongest chemical bond?






12. A type of carbohydrate






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






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






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






16. The basic sugar unit.






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






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






19. The reacting molecules of a chemical reaction.






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






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






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






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






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






25. Connected monomers (Amino Acids).






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






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






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






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






30. Compounds that contain carbon.






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






32. 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.






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






34. A reaction that requires energy






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






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






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






38. Sugar molecule in RNA






39. Ribonucleic acid. Generally a single strand






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






41. When threee monosaccharide's combine.






42. A single amino acid






43. A type of carbohydrate






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






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






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






47. Form components of cel membranes.






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






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






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