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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. Plants and animals obtain usable nitrogen






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






3. What phylum are snakes in?






4. Anabolism






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






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






7. In both living and non-living environments.






8. 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.






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






10. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






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






12. Has loosely packed cells that allow for gas and moisture exchange.






13. In DNA Thymine pairs with...






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






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






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






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






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






19. The individual we recognize as an adult fern.






20. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






21. Ended with the extinction of the dinosaurs.






22. Protein synthesis






23. All store energy within their chemical bonds.






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






25. Is the sugar that lactase acts upon.






26. In DNA Guanine pairs with...






27. 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.






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






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






30. Is the organelle where cellular reproductive processes occur.






31. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






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






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






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






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






36. Contains optic lobes - controls sight.






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






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






39. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






40. 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.






41. Is found on the stem between nodes.






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






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






44. 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.






45. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






46. Controls sensory and motor responses - and controls memory - speech - and intelligence factors.






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






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






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






50. 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