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






2. When threee monosaccharide's combine.






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






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






5. 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.






6. The reacting molecules of a chemical reaction.






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






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






9. Compounds that contain carbon.






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






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






12. Connected monomers (Amino Acids).






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






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






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






16. What is the strongest chemical bond?






17. The basic sugar unit.






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






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






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






21. A type of carbohydrate






22. 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






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






24. The result of a chemical reaction.






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






26. Long term energy storage.






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






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






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






30. Form components of cel membranes.






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






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






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






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






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






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






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






38. Provide a moisture barrier.






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






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






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






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






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






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






45. When four or more monosaccharide's combine.






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






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






48. 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.






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






50. The building blocks of all matter.