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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. Compounds that contain carbon.






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






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






4. The building blocks of all matter.






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






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






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






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






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






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






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






12. Sugare molecule in DNA






13. A reaction that produces energy






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






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






16. Provide a moisture barrier.






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






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






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






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






21. 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.






22. The basic sugar unit.






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






24. Connected monomers (Amino Acids).






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






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






27. 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






28. Form components of cel membranes.






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






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






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






32. The result of a chemical reaction.






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






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






35. A type of carbohydrate






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






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






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






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






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






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






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






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






44. What is the strongest chemical bond?






45. The double helix model of DNA.






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






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






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






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






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