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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. A type of carbohydrate






2. Sugare molecule in DNA






3. What is the strongest chemical bond?






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






5. When four or more monosaccharide's combine.






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






7. When compounds combine.






8. 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






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






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






12. The result of a chemical reaction.






13. 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.






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






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






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






17. Form components of cel membranes.






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






19. The double helix model of DNA.






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






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






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






23. A type of carbohydrate






24. Ribonucleic acid. Generally a single strand






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






26. Connected monomers (Amino Acids).






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






28. 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.






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






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






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






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






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






34. A reaction that produces energy






35. When threee monosaccharide's combine.






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






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






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






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






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






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






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






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






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






45. A reaction that requires energy






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






47. Provide a moisture barrier.






48. Sugar molecule in RNA






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






50. Long term energy storage.