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






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






3. Synthesis






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






5. 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






6. Plants and animals obtain usable nitrogen






7. 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.






8. The role played by an organism in its food chain.






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






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






11. 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.






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






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






14. 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.






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






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






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






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






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






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






21. Contains optic lobes - controls sight.






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






23. 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.






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






25. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






26. Covalent bonds






27. The large brain and upright posture of Homo Sapiens...






28. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






31. Disease causing






32. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






33. 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.






34. The class composed of birds.






35. An orienting response to light.






36. Covers and protects the leaf.






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






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






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






40. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






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






42. The individual we recognize as an adult fern.






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






44. Enzymes are usually __________ to certain reactions.






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






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






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






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






49. An enzyme is unaffected by the reactions it catalyzes






50. The pituitary gland.