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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. A reaction that produces energy






2. A reaction that requires energy






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






4. What is the strongest chemical bond?






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






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






7. Sugare molecule in DNA






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






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






10. 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.






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






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






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






14. 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






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






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






17. When threee monosaccharide's combine.






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






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






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






21. Provide a moisture barrier.






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






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






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






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






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






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






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






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






30. The double helix model of DNA.






31. When compounds combine.






32. The reacting molecules of a chemical reaction.






33. Compounds that contain carbon.






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






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






36. The result of a chemical reaction.






37. Form components of cel membranes.






38. The basic sugar unit.






39. Sugar molecule in RNA






40. A type of carbohydrate






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






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






43. Ribonucleic acid. Generally a single strand






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






45. Connected monomers (Amino Acids).






46. The building blocks of all matter.






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






48. A single amino acid






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






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