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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 pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






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






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






4. Inorganic phosphate






5. 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.






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






7. The phyla of sponges.






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






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






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






11. Subsets below the kingdom level






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






13. Contains many genes and is a structure comprised of linear DNA and associated proteins.






14. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






15. Synthesis






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






17. 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.






18. All store energy within their chemical bonds.






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






20. Carbon - Hydrogen - Oxygen - and Nitrogen






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






22. Mitochondria - they constitute the center of cellular respiration.

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






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






25. 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.






26. The total amount of genetic information available for a given species.






27. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






28. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






29. 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.






30. Covalent bonds






31. Decomposition of living matter for consumption.






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






33. An orienting response to light.






34. 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.






35. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






36. 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.






37. 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.






38. In both living and non-living environments.






39. Respiratory organs within insects






40. Controls hunger and thirst






41. Is a phylum that contains sponges.






42. The preservation of the integrity of genetic information from one generation to another.






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






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






45. 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.






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






47. 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.






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






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






50. Controls balance and muscle coordination