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






3. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






4. Is the sugar that lactase acts upon.






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






6. Ended with the extinction of the dinosaurs.






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






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






9. Occurs when two populations are geographically isolated from each other. Over time this results in the production of two separate species.






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






11. Covers and protects the leaf.






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






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






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






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






16. 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.






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






18. The size of a cell is limited by the ratio of its surface area to volume.






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






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






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






22. 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






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






24. 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.






25. Has loosely packed cells that allow for gas and moisture exchange.






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






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






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






29. The transfer of electrons.






30. High temperatures






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






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






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






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






35. Respiratory organs within insects






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






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






38. Niche






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






40. 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).






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






42. An enzyme is unaffected by the reactions it catalyzes






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






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






45. Controls balance and muscle coordination






46. 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.






47. 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.






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






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






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







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