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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. 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






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






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






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






5. The sharp boundary of an ecosystem.






6. 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.






7. Are the organelles where cellular respiration occurs.






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






9. Is found on the stem between nodes.






10. Covalent bonds






11. 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.






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






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






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






15. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






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






17. Enzymes are usually __________ to certain reactions.






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






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






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






21. Nonvascular plants such as mosses which lack tissue for conducting food or water.






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






23. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






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






25. Is a kingdom that includes algae and protozoa.






26. Is a phylum that contains sponges.






27. 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.






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






29. The phyla of sponges.






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






31. 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






32. Refers to the birthrate of a population.






33. 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






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






35. Controls hunger and thirst






36. Is weaker than ionic - covalent - disulfide - or double bonds.






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






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






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






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






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






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






43. An enzyme is unaffected by the reactions it catalyzes






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






45. The process of forming eggs and sperm cells in the reproductive organs.






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






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






48. Is a social behavior of an organism that is beneficial to the group at the individual's expense.






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






50. Is the organelle where cellular reproductive processes occur.