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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 basic sugar unit.






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






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






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






5. When threee monosaccharide's combine.






6. Sugar molecule in RNA






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






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






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






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






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






12. When compounds combine.






13. Compounds that contain carbon.






14. The result of a chemical reaction.






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






16. Long term energy storage.






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






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






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






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






21. The reacting molecules of a chemical reaction.






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






23. The building blocks of all matter.






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






25. Connected monomers (Amino Acids).






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






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






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






29. 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






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






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






32. Form components of cel membranes.






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






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






35. 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.






36. A reaction that requires energy






37. Provide a moisture barrier.






38. A reaction that produces energy






39. What is the strongest chemical bond?






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






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






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






43. A type of carbohydrate






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






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






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






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






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






49. Ribonucleic acid. Generally a single strand






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