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






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






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






4. 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.






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






6. In DNA Thymine pairs with...






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






8. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






9. This is a carboxyl group and is the signature group found within organic acids.






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






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






12. 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.






13. The phyla composed of segmented worms.






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






15. Covalent bonds






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






17. Breaking down






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






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






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






21. Anabolism






22. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






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






24. Is the waxy protective outer coating of leaves.






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






26. 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.






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






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






29. Is the major component of sand and is the most abundant element found in the lithosphere. It is not recycled.






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






31. Process of breaking down complex materials (foods) to form simpler substances and release energy.






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






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






34. The phyla of sponges.






35. Controls balance and muscle coordination






36. High temperatures






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






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






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






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

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41. 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






42. 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.






43. Enzymes are usually __________ to certain reactions.






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






45. 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.






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






47. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






48. 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.






49. What phylum are snakes in?






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