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






2. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






3. The process of forming eggs and sperm cells in the reproductive organs.






4. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






5. Channels is cell membranes that carry water between cells.






6. An orienting response to light.






7. 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.






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






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






10. 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.






11. Cleave strands of DNA segments at certain sites.






12. A cell will only remain stable if the surface area of the plasma membrane maintains a __________ with the volume of the cytoplasm.






13. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






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






15. Protein synthesis






16. 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






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






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






19. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






20. 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






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






22. Is weaker than ionic - covalent - disulfide - or double bonds.






23. 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.






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






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






26. Has loosely packed cells that allow for gas and moisture exchange.






27. The large brain and upright posture of Homo Sapiens...






28. Contain one celled eukaryotes such as algae and protozoa.






29. Is found on the stem between nodes.






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






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






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






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






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






35. 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.






36. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






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






38. The phyla composed of segmented worms.






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






40. Controls balance and muscle coordination






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






42. 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).






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






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






45. The phyla of round worms.






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






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. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






49. 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.






50. 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