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






2. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






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






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






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






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






7. 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.






8. The vocal cords are found in the larynx.






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






10. 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.






11. 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






12. 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.






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






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






15. Are cells involved in immunity and are produced in bone marrow as stem cells.






16. 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.






17. 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.






18. Some energy is lost as heat and becomes unusable.






19. Subsets below the kingdom level






20. 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.






21. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






22. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






23. Most fossils of Hominids are from continents other than...






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






25. Covalent bonds






26. Plants and animals obtain usable nitrogen






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






28. Are more closely related to Homo Sapiens than to other apes - but Homo Sapiens did not evolve from chimpanzees.






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






30. When the water concentration inside and outside the cell is equal - It is said to be in an...






31. Decomposition of living matter for consumption.






32. The transfer of electrons.






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






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






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






37. Includes all living and nonliving components of the Earth to support living things.






38. The phyla of round worms.






39. 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.






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






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






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






43. Disease causing






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






45. A hydrogen bond involves the ________________ and can be easily broken.






46. 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.






47. 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.






48. In both living and non-living environments.






49. Respiratory organs within insects






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