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






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






3. A reaction that requires energy






4. A type of carbohydrate






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






6. When threee monosaccharide's combine.






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






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






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






10. Connected monomers (Amino Acids).






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






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






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






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






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






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






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






18. The basic sugar unit.






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






20. Long term energy storage.






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






22. When compounds combine.






23. Sugar molecule in RNA






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






25. A type of carbohydrate






26. Form components of cel membranes.






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






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






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






30. When four or more monosaccharide's combine.






31. The reacting molecules of a chemical reaction.






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






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






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






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






36. Sugare molecule in DNA






37. A reaction that produces energy






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






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






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






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






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






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






44. 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.






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






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






47. Compounds that contain carbon.






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






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






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