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






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

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






4. Ended with the extinction of the dinosaurs.






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






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






7. 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.






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






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






10. Carbon - Hydrogen - Oxygen - and Nitrogen






11. 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.






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






13. The sharp boundary of an ecosystem.






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






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






16. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






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






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






19. Subsets below the kingdom level






20. Is an abundant element found in protoplasm. Together with oxygen - hydrogen - and nitrogen - it composes over 90% of cellular structure.






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






22. Absorb a photon of light and is found in the grana of the chloroplast.






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






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






25. Is a kingdom that includes algae and protozoa.






26. Inorganic phosphate






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






28. Transfers water and does not require sieve plates to allow nutrients through.






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






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






31. Cleave strands of DNA segments at certain sites.






32. Protein synthesis






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






34. Veins in the leaf and are also distributed throughout the stem






35. The class composed of birds.






36. Is the waxy protective outer coating of leaves.






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






38. 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






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






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






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






42. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






43. Are more closely related to Homo Sapiens than to other apes - but Homo Sapiens did not evolve from chimpanzees.






44. Enzymes are usually __________ to certain reactions.






45. 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.






46. 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.






47. 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.






48. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






49. In DNA Guanine pairs with...






50. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.