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






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






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






4. The reacting molecules of a chemical reaction.






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






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






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






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






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






10. Long term energy storage.






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






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






13. A type of carbohydrate






14. A reaction that requires energy






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






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






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






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






19. 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.






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






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






22. The result of a chemical reaction.






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






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






25. Sugare molecule in DNA






26. Compounds that contain carbon.






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






28. When compounds combine.






29. Sugar molecule in RNA






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






31. When threee monosaccharide's combine.






32. Provide a moisture barrier.






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






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






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






36. What is the strongest chemical bond?






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






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






39. A single amino acid






40. Connected monomers (Amino Acids).






41. Form components of cel membranes.






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






43. A type of carbohydrate






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






45. 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






46. Ribonucleic acid. Generally a single strand






47. A reaction that produces energy






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






49. The basic sugar unit.






50. When four or more monosaccharide's combine.