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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 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






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






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






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






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






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






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






8. 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.






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






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






11. The reacting molecules of a chemical reaction.






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






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






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






15. The building blocks of all matter.






16. A reaction that produces energy






17. Long term energy storage.






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






19. Form components of cel membranes.






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






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






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






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






24. Connected monomers (Amino Acids).






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






26. A type of carbohydrate






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






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






29. When four or more monosaccharide's combine.






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






31. Sugare molecule in DNA






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






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






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






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






36. The result of a chemical reaction.






37. What is the strongest chemical bond?






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






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






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






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






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






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






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






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






46. When threee monosaccharide's combine.






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






48. A type of carbohydrate






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






50. The basic sugar unit.