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






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






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






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






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






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






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






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. When compounds combine.






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






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






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






13. A reaction that requires energy






14. The basic sugar unit.






15. What is the strongest chemical bond?






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






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






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






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






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






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






22. The result of a chemical reaction.






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






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






25. Sugare molecule in DNA






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






27. When four or more monosaccharide's combine.






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






29. Form components of cel membranes.






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






31. Provide a moisture barrier.






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






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






34. A reaction that produces energy






35. Connected monomers (Amino Acids).






36. Ribonucleic acid. Generally a single strand






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






38. A single amino acid






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






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






41. 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.






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






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






44. The reacting molecules of a chemical reaction.






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






46. When threee monosaccharide's combine.






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






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






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






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