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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. Sugar molecule in RNA






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






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






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






5. When threee monosaccharide's combine.






6. The double helix model of DNA.






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






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






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






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






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






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






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






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






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






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






17. Connected monomers (Amino Acids).






18. Ribonucleic acid. Generally a single strand






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






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






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






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






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






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






25. The reacting molecules of a chemical reaction.






26. A single amino acid






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






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






29. The basic sugar unit.






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






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






32. Sugare molecule in DNA






33. When compounds combine.






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






35. A type of carbohydrate






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






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






38. The building blocks of all matter.






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






40. Form components of cel membranes.






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






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






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






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






45. 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






46. Compounds that contain carbon.






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






48. Provide a moisture barrier.






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






50. What is the strongest chemical bond?