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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. When four or more monosaccharide's combine.






2. The reacting molecules of a chemical reaction.






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






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






5. The basic sugar unit.






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






7. The double helix model of DNA.






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






9. Sugare molecule in DNA






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






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






12. A reaction that produces energy






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






14. Form components of cel membranes.






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






16. The result of a chemical reaction.






17. Provide a moisture barrier.






18. 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.






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






20. When threee monosaccharide's combine.






21. Sugar molecule in RNA






22. Connected monomers (Amino Acids).






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






24. 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






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






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






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






28. A type of carbohydrate






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






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






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






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






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






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






35. The building blocks of all matter.






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






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






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






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






40. A reaction that requires energy






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






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






43. What is the strongest chemical bond?






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






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






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






47. Long term energy storage.






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






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






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