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






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






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






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






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






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






7. What is the strongest chemical bond?






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






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






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






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






12. The building blocks of all matter.






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






14. Connected monomers (Amino Acids).






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






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






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






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






19. 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






20. When threee monosaccharide's combine.






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






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






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






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






25. A type of carbohydrate






26. The basic sugar unit.






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






28. Sugare molecule in DNA






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






30. When four or more monosaccharide's combine.






31. The double helix model of DNA.






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






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






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






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






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






38. Sugar molecule in RNA






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






40. A reaction that requires energy






41. Long term energy storage.






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






43. Compounds that contain carbon.






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






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






46. A single amino acid






47. Ribonucleic acid. Generally a single strand






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






49. 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.






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