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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 reacting molecules of a chemical reaction.






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






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






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






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






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






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






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






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






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






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






12. Compounds that contain carbon.






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






14. The building blocks of all matter.






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






16. Sugar molecule in RNA






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






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






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






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






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






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






23. The double helix model of DNA.






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






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






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






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






28. The basic sugar unit.






29. A type of carbohydrate






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






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






32. Connected monomers (Amino Acids).






33. When threee monosaccharide's combine.






34. 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.






35. The result of a chemical reaction.






36. A type of carbohydrate






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






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






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






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






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






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






43. 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.






44. A reaction that requires energy






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






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






47. Sugare molecule in DNA






48. A single amino acid






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






50. When four or more monosaccharide's combine.