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






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. Protein synthesis






4. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






5. The phyla composed of segmented worms.






6. Niche






7. Subsets below the kingdom level






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






9. 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).






10. Some energy is lost as heat and becomes unusable.






11. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






12. High temperatures






13. 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






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






15. 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






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






17. In DNA Thymine pairs with...






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






19. Is a phylum that contains sponges.






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






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






22. The class composed of birds.






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






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






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






26. Carbon - Hydrogen - Oxygen - and Nitrogen






27. Ended with the extinction of the dinosaurs.






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






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






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






31. 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.






32. Nonvascular plants such as mosses which lack tissue for conducting food or water.






33. Is the organelle where cellular reproductive processes occur.






34. 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






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






36. The vocal cords are found in the larynx.






37. (of some plants or fungi) feeding on dead or decaying organic matter






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






39. 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.






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






41. Are organic cofactors or coenzymes that are required by some enzymatic reactions.






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






43. 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






44. Channels is cell membranes that carry water between cells.






45. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






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






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






48. Synthesis






49. Develops from the morula as a thin layer of cells surrounding an internal cavity.






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







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