Test your basic knowledge |

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. Fossilized burrows from multicellular organisms begin to appear in the geological record approximately 700 million years ago during the Precambrian period. These multicellular animals had only soft parts and could not be fossilized.






2. The phyla of sponges.






3. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






4. Subsets below the kingdom level






5. Is the sugar that lactase acts upon.






6. Are the organelles where cellular respiration occurs.






7. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






8. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






9. Is when expression of genetic traits is determined by weather the trait is inherited from the mother or the father.






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






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






12. Is a substance that changes the speed of a reaction without being affected itself.






13. Refers to the birthrate of a population.






14. Develops from the morula as a thin layer of cells surrounding an internal cavity.






15. 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).






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






17. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






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






19. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






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






21. It secretes saliva which enters the digestive tract and aids the digestive process.






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. The sharp boundary of an ecosystem.






24. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






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






26. The phylum of insects (bees).






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






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






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






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






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






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






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






34. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






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






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






37. Allows for the genetic code to be preserved in future generations of cells.






38. Breaking down






39. Contains optic lobes - controls sight.






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






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






42. 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.






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






44. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






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






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






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






48. An orienting response to light.






49. Is the process that releases energy for use by the cell.






50. Some enzymes contain a __________ component that is essential to their functions.