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. 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.






2. Engages in both passive and active transport.






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






4. Is the organelle where cellular reproductive processes occur.






5. The sharp boundary of an ecosystem.






6. 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






7. The class composed of birds.






8. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






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






10. 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.






11. An orienting response to light.






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






13. 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.






14. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






15. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






16. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






17. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






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






19. 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






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






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






22. In both living and non-living environments.






23. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






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






25. Is a phylum that contains sponges.






26. 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.






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






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






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






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






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






32. Subsets below the kingdom level






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






34. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






35. 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.






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






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






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






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






40. Covers and protects the leaf.






41. 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.






42. 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






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






44. Carbon - Hydrogen - Oxygen - and Nitrogen






45. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






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






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






48. The preservation of the integrity of genetic information from one generation to another.






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






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