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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. Is disorganized - unravelled - DNA with histones attached.






2. Is the sugar that lactase acts upon.






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






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






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






6. Decomposition of living matter for consumption.






7. Engages in both passive and active transport.






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






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






10. An orienting response to light.






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






12. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






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






14. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






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






16. Protein synthesis






17. Super-class of vertebrae including organisms with no jaws.






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






19. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






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






21. What phylum are snakes in?






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






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






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






25. Most fossils of Hominids are from continents other than...






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






27. Is a phylum that contains sponges.






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






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






30. Contains optic lobes - controls sight.






31. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






32. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






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






34. 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.






35. 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.






36. May be ions or non-protein molecules - they are similar to cofactors - but differ in that they are tightly attached by covalent bonds to the enzyme - rather than being separate atoms or molecules.






37. Controls olfactory lobes (smell)






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






39. 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.






40. Refers to the birthrate of a population.






41. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






42. Synthesis






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






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






45. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






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






47. 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.






48. Breaking down






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






50. Ended with the extinction of the dinosaurs.






Can you answer 50 questions in 15 minutes?



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