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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. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






2. Cleave strands of DNA segments at certain sites.






3. Subsets below the kingdom level






4. Contain one celled eukaryotes such as algae and protozoa.






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






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






7. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






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






9. 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






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






11. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






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






13. The phylum of insects (bees).






14. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






15. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






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






17. Is a kingdom that includes algae and protozoa.






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






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






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






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






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






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






24. Controls hunger and thirst






25. Synthesis






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






27. 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.






28. Protein synthesis






29. Produce seeds without flowers. They include conifers (cone-bearers) and cycads.






30. 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.






31. Anabolism






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






33. 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).






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






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

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






37. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






38. In both living and non-living environments.






39. Is the organelle where cellular reproductive processes occur.






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






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






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






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






44. High temperatures






45. Niche






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






47. 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.






48. A hydrogen bond involves the ________________ and can be easily broken.






49. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






50. Contains optic lobes - controls sight.