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CLEP 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. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






2. Super-class of vertebrae including organisms with jaws.






3. Transfers water and does not require sieve plates to allow nutrients through.






4. Is the sugar that lactase acts upon.






5. Stood upright before there was an increase in brain size.






6. The sharp boundary of an ecosystem.






7. Some energy is lost as heat and becomes unusable.






8. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






9. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






10. Is a special protein that acts as a catalyst for organic reactions.






11. Nonvascular plants such as mosses which lack tissue for conducting food or water.






12. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






13. Contains many genes and is a structure comprised of linear DNA and associated proteins.






14. Is the waxy protective outer coating of leaves.






15. Is when expression of genetic traits is determined by weather the trait is inherited from the mother or the father.






16. Is found on the stem between nodes.






17. A hydrogen bond involves the ________________ and can be easily broken.






18. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






19. Allows for the genetic code to be preserved in future generations of cells.






20. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






21. Inorganic phosphate






22. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






23. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






24. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






25. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






26. Is a substance that changes the speed of a reaction without being affected itself.






27. The total amount of genetic information available for a given species.






28. Is the number of organisms that can be supported within a particular ecosystem.






29. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






30. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






31. Engages in both passive and active transport.






32. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






33. The preservation of the integrity of genetic information from one generation to another.






34. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






35. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






36. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






37. The phyla of sponges.






38. Is a coenzyme required in the synthesis of collagen.






39. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






40. Layer that will become the gut lining as well as some accessory structures.






41. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






42. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






43. Synthesis






44. The role played by an organism in its food chain.






45. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






46. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






47. Plants and animals obtain usable nitrogen






48. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






49. Enzymes are usually __________ to certain reactions.






50. Refers to the birthrate of a population.