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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. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






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






3. Is disorganized - unravelled - DNA with histones attached.






4. When the water concentration inside and outside the cell is equal - It is said to be in an...






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






6. 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.






7. The number of organisms in a given community - can be above or below the carrying capacity.






8. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






9. The size of a cell is limited by the ratio of its surface area to volume.






10. 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.






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






12. Covers and protects the leaf.






13. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






14. The systematic search for individuals with a specific genotype in a delineated population.






15. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






16. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






17. Covalent bonds






18. Is the organelle where cellular reproductive processes occur.






19. Disease causing






20. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






21. The pituitary gland.






22. Are cells involved in immunity and are produced in bone marrow as stem cells.






23. Subsets below the kingdom level






24. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






25. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






26. In both living and non-living environments.






27. It secretes saliva which enters the digestive tract and aids the digestive process.






28. 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






29. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






30. Is found on the stem between nodes.






31. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






32. (of some plants or fungi) feeding on dead or decaying organic matter






33. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






34. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






35. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






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






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






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






39. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






40. 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.






41. Synthesis






42. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






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






44. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






45. Is weaker than ionic - covalent - disulfide - or double bonds.






46. Develops from the morula as a thin layer of cells surrounding an internal cavity.






47. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






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






49. An enzyme is unaffected by the reactions it catalyzes






50. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t