Test your basic knowledge |

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






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






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






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






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






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






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






8. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






9. Is the number of organisms that can be supported within a particular ecosystem.






10. 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.






11. Cleave strands of DNA segments at certain sites.






12. In both living and non-living environments.






13. Nonvascular plants such as mosses which lack tissue for conducting food or water.






14. 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.






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






16. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






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






18. The phyla of sponges.






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






20. Is found on the stem between nodes.






21. The vocal cords are found in the larynx.






22. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






23. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






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






25. Plants and animals obtain usable nitrogen






26. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






27. 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.






28. Is a molecule that stores information for protein synthesis and genetic coding.






29. 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.






30. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






31. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






32. 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.






33. Respiratory organs within insects






34. Ended with the extinction of the dinosaurs.






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






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






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






38. 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






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






40. Are the organelles where cellular respiration occurs.






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






42. 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.






43. Contains optic lobes - controls sight.






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






45. All store energy within their chemical bonds.






46. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






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






48. 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.






49. Layer that will become the skin - some endocrine glands - and the nervous system.






50. Is a phylum that contains sponges.