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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. The transfer of electrons.






2. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






3. An orienting response to light.






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






5. Most fossils of Hominids are from continents other than...






6. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






7. Covers and protects the leaf.






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






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






10. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






11. Is the outermost layer of cells of the stem.






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






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






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






15. Has extreme cold temperatures - low precipitation - modified grassland - perma-frost - a short growing season and some plants and animals.






16. Refers to the birthrate of a population.






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






18. 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.






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






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






21. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






22. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






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






24. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






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






26. Is a phylum that contains jellyfish - hydra - etc.






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






28. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






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






30. Are organic cofactors or coenzymes that are required by some enzymatic reactions.






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






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






33. 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.






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






35. Enzymes are usually __________ to certain reactions.






36. Are the organelles where cellular respiration occurs.






37. Is the earliest period of the Paleozoic era. Began with the Cambrian explosion - this explosion of life resulted in the representatives of most of the modern phyla being present.






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






39. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).






40. The phyla of round worms.






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






42. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






43. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






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






46. The class composed of birds.






47. Some enzymes contain a __________ component that is essential to their functions.






48. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






49. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






50. Protein synthesis