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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 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.






2. The most recent and present era. It includes the radiation of flowering plants - the angiosperms.






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






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






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






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






7. Engages in both passive and active transport.






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






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






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






11. 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.






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






13. Protein synthesis






14. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






15. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






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






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






18. The sharp boundary of an ecosystem.






19. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






20. Allows for the genetic code to be preserved in future generations of cells.






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






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






23. The vocal cords are found in the larynx.






24. The pituitary gland.






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






26. Is a phylum that contains sponges.






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






28. This is a carboxyl group and is the signature group found within organic acids.






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






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






31. The class composed of birds.






32. Covers and protects the leaf.






33. Develops from the morula as a thin layer of cells surrounding an internal cavity.






34. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






35. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






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






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






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






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






40. Algae and Protozoa belong to the kingdom...






41. Stood upright before there was an increase in brain size.






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






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






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






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






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. 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.






48. Carbon - Hydrogen - Oxygen - and Nitrogen






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






50. Must be present for photosynthesis to occur - it is not used up in the process.