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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 found in the root cap and is responsible for quick growth in the roots.






2. 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.






3. In DNA Thymine pairs with...






4. 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.






5. 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.






6. The sharp boundary of an ecosystem.






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






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






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






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






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






12. 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.






13. Protein synthesis






14. Is a kingdom that includes algae and protozoa.






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






16. Is a packet of digestive enzymes that destroy cellular wastes.






17. Respiratory organs within insects






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






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






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






21. Subsets below the kingdom level






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






23. All store energy within their chemical bonds.






24. A suffix meaning 'to break apart.' O || ||






25. 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.






26. An orienting response to light.






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






28. 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.






29. Super-class of vertebrae including organisms with no jaws.






30. The size of a cell is limited by the ratio of its surface area to volume.






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






32. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






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






34. 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.






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






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






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






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






39. Is a phylum that contains jellyfish - hydra - etc.






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






41. Some enzymes contain a __________ component that is essential to their functions.






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






43. The phyla composed of segmented worms.






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






45. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






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






47. 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.






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






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






50. 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.