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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 composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






2. The transfer of electrons.






3. Is a molecule that stores information for protein synthesis and genetic coding.






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






5. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






6. Ended with the extinction of the dinosaurs.






7. 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.






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






9. A suffix meaning 'to break apart.' O || ||






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






11. Includes all living and nonliving components of the Earth to support living things.






12. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






13. Contains optic lobes - controls sight.






14. An enzyme is unaffected by the reactions it catalyzes






15. 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






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






17. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






18. 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.






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






20. Inorganic phosphate






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






22. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






23. Respiratory organs within insects






24. 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






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






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






27. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






28. Must be present for photosynthesis to occur - it is not used up in the process.






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






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






31. Subsets below the kingdom level






32. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






33. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






34. Controls olfactory lobes (smell)






35. In DNA Thymine pairs with...






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






37. Anabolism






38. The destruction of gametes - (sex cells such as sperm and eggs).






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






40. The phyla composed of segmented worms.






41. Niche






42. Layer that will become the skin - some endocrine glands - and the nervous system.






43. 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






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






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






46. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






47. 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.






48. The phyla of round worms.






49. Is a phylum that contains sponges.






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