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






2. 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






3. Decomposition of living matter for consumption.






4. 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






5. The phyla composed of segmented worms.






6. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






7. In DNA Thymine pairs with...






8. Is a coenzyme required in the synthesis of collagen.






9. Ended with the extinction of the dinosaurs.






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






11. Carbon - nitrogen - phosphorous - and water. These are all recycled through biogeochemical processes.






12. Are the organelles where cellular respiration occurs.






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






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






15. 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.






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






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






18. 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






19. The sharp boundary of an ecosystem.






20. Is more like branching out of a tree with dead ends and new branches appearing simultaneously than like steps on a ladder.






21. Include: Vascular tissue - including both xylem and phloem - and sieve plates existing between cells of the stem.






22. 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).






23. Inorganic phosphate






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






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






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






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






28. 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.






29. 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.






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






31. Occurs when an individual learns not to respond to a particular stimulus - for instance when a stimulus is repeated many times without consequence.






32. 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.






33. Is an accidental change of the DNA sequence of the gene that can result in creating a change of trait that is not found in the parent.






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






35. 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






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






37. An orienting response to light.






38. The destruction of gametes - (sex cells such as sperm and eggs).






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






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






41. The class composed of birds.






42. Refers to the birthrate of a population.






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






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






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






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






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






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






49. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






50. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.