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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. 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






2. Carbon - Hydrogen - Oxygen - and Nitrogen






3. 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






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






5. Is found on the stem between nodes.






6. Covers and protects the leaf.






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






8. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






9. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






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






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






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






13. Absorb a photon of light and is found in the grana of the chloroplast.






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






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






16. Is the sugar that lactase acts upon.






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






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






19. In both living and non-living environments.






20. 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.






21. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






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






23. 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.






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






25. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






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






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






28. The class composed of birds.






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






30. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






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






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






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






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






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






36. 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.






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






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






39. Contains optic lobes - controls sight.






40. The transfer of electrons.






41. 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.






42. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






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






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






45. Controls balance and muscle coordination






46. 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






47. 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.






48. Covalent bonds






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






50. The phyla of sponges.