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






2. The phyla of round worms.






3. Controls hunger and thirst






4. 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.






5. In DNA Guanine pairs with...






6. Are the organelles where cellular respiration occurs.






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






8. Cleave strands of DNA segments at certain sites.






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






10. 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.






11. Refers to the birthrate of a population.






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






13. Is the sugar that lactase acts upon.






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






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






16. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






17. Is the waxy protective outer coating of leaves.






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






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






20. 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.






21. 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.






22. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






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






24. Respiratory organs within insects






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






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






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






28. Engages in both passive and active transport.






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






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






31. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






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






33. When stems bend toward the light it is due to _____________ the hormone auxin - in response to light - migrates from the light to the dark side of the shoot tip. The cells on the dark side now contain more auxin - which causes the cells on that side






34. (of some plants or fungi) feeding on dead or decaying organic matter






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






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






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






38. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






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






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






41. An enzyme is unaffected by the reactions it catalyzes






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






43. The individual we recognize as an adult fern.






44. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






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






46. 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






47. 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.






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






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






50. Is a coenzyme required in the synthesis of collagen.







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