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






2. Connected monomers (Amino Acids).






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






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






5. Sugare molecule in DNA






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






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






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






9. Compounds that contain carbon.






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






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






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






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






14. Provide a moisture barrier.






15. 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.






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






17. A reaction that produces energy






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






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






20. What is the strongest chemical bond?






21. The basic sugar unit.






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






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






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






25. Form components of cel membranes.






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






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






28. A type of carbohydrate






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






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






31. 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






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






33. When compounds combine.






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






35. A type of carbohydrate






36. A reaction that requires energy






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






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






39. The result of a chemical reaction.






40. 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.






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






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






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






44. Ribonucleic acid. Generally a single strand






45. The double helix model of DNA.






46. The building blocks of all matter.






47. The reacting molecules of a chemical reaction.






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






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






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