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






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






3. The phyla of round worms.






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






5. 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.






6. The process of forming eggs and sperm cells in the reproductive organs.






7. 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






8. Mitochondria - they constitute the center of cellular respiration.

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9. Plants and animals obtain usable nitrogen






10. There was extensive radiation of fish during the Devonian and Silurian periods within the Paleozoic Era.






11. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






12. High temperatures






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






14. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






15. Is the waxy protective outer coating of leaves.






16. Studied the relationships between traits expressed in parents and offspring and the genes that caused the traits to be expressed.






17. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






18. Provide rigidity to plant cells (and some bacteria) and are not found within animal cells.






19. 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.






20. Is the sugar that lactase acts upon.






21. Protein synthesis






22. The phylum of insects (bees).






23. Some patrol the blood for antigens - but are also equipped to destroy antigens. They may regulate immune responses as well.






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






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






26. 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.






27. Is the outermost of the three main layers of an embryo.






28. The phyla composed of segmented worms.






29. Controls hunger and thirst






30. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






31. 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.






32. Are the organelles where cellular respiration occurs.






33. 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.






34. Sex-linked recessive disorder carried on the x chromosome defined by the absence of one or more proteins required for blood clotting






35. 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.






36. Synthesis






37. In DNA Guanine pairs with...






38. Is found in the root cap and is responsible for quick growth in the roots.






39. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






40. Is the process that releases energy for use by the cell.






41. Engages in both passive and active transport.






42. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






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






44. The vocal cords are found in the larynx.






45. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






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






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






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






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






50. Contain one celled eukaryotes such as algae and protozoa.