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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. 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.






2. In both living and non-living environments.






3. 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.






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






5. 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






6. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






7. 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.






8. Breaking down






9. 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.






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






11. Contains optic lobes - controls sight.






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






13. Protein synthesis






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






15. The phyla composed of segmented worms.






16. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






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






18. Is a kingdom that includes algae and protozoa.






19. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






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






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






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






23. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






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






25. Layer that will become the gut lining as well as some accessory structures.






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






27. Process of breaking down complex materials (foods) to form simpler substances and release energy.






28. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






29. The pituitary gland.






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






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






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






33. Inorganic phosphate






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






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






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






37. Subsets below the kingdom level






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






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






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






41. 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.






42. Niche






43. Algae and Protozoa belong to the kingdom...






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






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






46. Controls olfactory lobes (smell)






47. The class composed of birds.






48. 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.






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






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