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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. The reacting molecules of a chemical reaction.






2. The result of a chemical reaction.






3. A type of carbohydrate






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






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






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






7. A reaction that requires energy






8. When threee monosaccharide's combine.






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






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






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






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






13. Connected monomers (Amino Acids).






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






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






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






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






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






19. 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.






20. Form components of cel membranes.






21. The building blocks of all matter.






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






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






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






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






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






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






28. Long term energy storage.






29. A single amino acid






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






31. A type of carbohydrate






32. Sugare molecule in DNA






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






34. When compounds combine.






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






36. 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






37. The double helix model of DNA.






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






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






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






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






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






43. What is the strongest chemical bond?






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






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






46. Provide a moisture barrier.






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






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






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






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