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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. 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.






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






3. Ended with the extinction of the dinosaurs.






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






5. Disease causing






6. What phylum are snakes in?






7. Respiratory organs within insects






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






9. The phyla of round worms.






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






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






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






13. 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.






14. The vocal cords are found in the larynx.






15. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






16. An enzyme is unaffected by the reactions it catalyzes






17. Is the sugar that lactase acts upon.






18. Decomposition of living matter for consumption.






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






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






21. Is a kingdom that includes algae and protozoa.






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






23. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






24. The sharp boundary of an ecosystem.






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






26. 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.






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






28. 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.






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






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






31. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






32. In DNA Guanine pairs with...






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






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






35. High temperatures






36. The destruction of gametes - (sex cells such as sperm and eggs).






37. 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.






38. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






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






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






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






42. 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.






43. In DNA Thymine pairs with...






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






45. Is the outermost of the three main layers of an embryo.






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






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






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






49. 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.






50. 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.