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






2. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






3. 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.






4. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






5. Channels is cell membranes that carry water between cells.






6. Covers and protects the leaf.






7. Stood upright before there was an increase in brain size.






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






9. Disease causing






10. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






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






12. 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.






13. What phylum are snakes in?






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






15. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






16. The class composed of birds.






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






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






19. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






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






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






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






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






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






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






26. Is a special protein that acts as a catalyst for organic reactions.






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






28. Is a phylum that contains sponges.






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






30. Sex-linked recessive disorder carried on the x chromosome defined by the absence of one or more proteins required for blood clotting






31. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






32. The vocal cords are found in the larynx.






33. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






34. An enzyme is unaffected by the reactions it catalyzes






35. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






36. In DNA Thymine pairs with...






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






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






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






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






41. Niche






42. 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.






43. 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.






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






45. 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.






46. When stems bend toward the light it is due to _____________ the hormone auxin - in response to light - migrates from the light to the dark side of the shoot tip. The cells on the dark side now contain more auxin - which causes the cells on that side






47. Enzymes are usually __________ to certain reactions.






48. Super-class of vertebrae including organisms with jaws.






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






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