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






2. The double helix model of DNA.






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






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






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






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






7. 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.






8. Long term energy storage.






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






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






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






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






13. The basic sugar unit.






14. The result of a chemical reaction.






15. 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






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






17. A reaction that produces energy






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






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






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






21. Sugar molecule in RNA






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






23. When four or more monosaccharide's combine.






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






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






26. Connected monomers (Amino Acids).






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






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






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






30. 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.






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






32. A type of carbohydrate






33. When threee monosaccharide's combine.






34. When compounds combine.






35. A type of carbohydrate






36. Sugare molecule in DNA






37. Provide a moisture barrier.






38. Form components of cel membranes.






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






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






41. What is the strongest chemical bond?






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






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






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






45. A reaction that requires energy






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






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






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






49. Ribonucleic acid. Generally a single strand






50. A single amino acid