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






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






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






4. 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.






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






6. The building blocks of all matter.






7. Long term energy storage.






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






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






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






11. The reacting molecules of a chemical reaction.






12. Connected monomers (Amino Acids).






13. Compounds that contain carbon.






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






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






16. When four or more monosaccharide's combine.






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






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






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






20. Sugar molecule in RNA






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






22. The double helix model of DNA.






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






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






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






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






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






28. A type of carbohydrate






29. A type of carbohydrate






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






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






32. Sugare molecule in DNA






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






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






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






36. What is the strongest chemical bond?






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






38. 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






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






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






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






42. The result of a chemical reaction.






43. When threee monosaccharide's combine.






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






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






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






47. A reaction that requires energy






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






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






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