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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. 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.






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






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






4. 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






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






6. 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.






7. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






8. Mitochondria - they constitute the center of cellular respiration.

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9. 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






10. Can be accounted for by the theory of punctuated equilibrium. The fossil record shows periods of stability with regard to appearance and disappearance of species as well as periods of sudden change.






11. The phyla composed of segmented worms.






12. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).






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






14. It secretes saliva which enters the digestive tract and aids the digestive process.






15. Refers to the birthrate of a population.






16. 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).






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






18. 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.






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






20. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






21. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






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






23. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






24. 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






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






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






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






28. 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.






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






30. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






31. Synthesis






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






33. 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.






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






35. Becomes available for erosion as undersea sedimentary rocks are up-thrust by volcanic activity - erosion releases it from rocks into streams where it combines with oxygen to form phosphates in lakes that are then absorbed by plants - it is recycled t






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






37. Plants and animals obtain usable nitrogen






38. Ended with the extinction of the dinosaurs.






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






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






41. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






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






43. An orienting response to light.






44. In DNA Thymine pairs with...






45. Is a packet of digestive enzymes that destroy cellular wastes.






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






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






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






49. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






50. Respiratory organs within insects