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






2. Provide a moisture barrier.






3. When threee monosaccharide's combine.






4. The result of a chemical reaction.






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






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






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






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






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






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






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






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






14. Form components of cel membranes.






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






16. The basic sugar unit.






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






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






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






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






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






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






23. 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






24. Ribonucleic acid. Generally a single strand






25. A type of carbohydrate






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






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






28. What is the strongest chemical bond?






29. A type of carbohydrate






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






31. Sugare molecule in DNA






32. When four or more monosaccharide's combine.






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






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






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






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






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






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






39. Sugar molecule in RNA






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






41. Long term energy storage.






42. The double helix model of DNA.






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






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






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






46. Connected monomers (Amino Acids).






47. A reaction that requires energy






48. A single amino acid






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






50. The reacting molecules of a chemical reaction.