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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. 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.






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






3. 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






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






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






6. The transfer of electrons.






7. Engages in both passive and active transport.






8. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






9. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






10. The phyla composed of segmented worms.






11. All store energy within their chemical bonds.






12. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






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






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






15. The class composed of birds.






16. 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.






17. Inorganic phosphate






18. Is the sugar that lactase acts upon.






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






20. The phyla of round worms.






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






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






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






24. Are tubes constructed of a geometrical arrangement of microtubules in a pinwheel shape. Their function includes the formation of new microtubules - but is primarily to form the structural skeleton around which cells split during mitosis and meiosis.






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






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






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






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






29. Niche






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






31. Contains optic lobes - controls sight.






32. 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).






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






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






35. 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.






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






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






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






39. Is found in the root cap and is responsible for quick growth in the roots.






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






41. Are surrounded by capillaries that allow for carbon dioxide to diffuse into the lungs and oxygen to diffuse out.






42. The preservation of the integrity of genetic information from one generation to another.






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






44. Anabolism






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






46. 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.






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






48. Refers to the birthrate of a population.






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

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50. Super-class of vertebrae including organisms with jaws.







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