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






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






3. 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.






4. A reaction that produces energy






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






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






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






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






9. A reaction that requires energy






10. 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






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






12. A type of carbohydrate






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






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






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






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






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






18. 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.






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






20. Provide a moisture barrier.






21. Ribonucleic acid. Generally a single strand






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






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






24. When compounds combine.






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






26. Form components of cel membranes.






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






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






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






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






31. The result of a chemical reaction.






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






33. The basic sugar unit.






34. Connected monomers (Amino Acids).






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






36. When four or more monosaccharide's combine.






37. Long term energy storage.






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






39. The building blocks of all matter.






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






41. The reacting molecules of a chemical reaction.






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






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






44. Compounds that contain carbon.






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






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






47. The double helix model of DNA.






48. When threee monosaccharide's combine.






49. Sugare molecule in DNA






50. Sugar molecule in RNA







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