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






2. Enzymes are usually __________ to certain reactions.






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






4. Produces the most ATP molecules - yielding 34 ATPs per glucose molecule.






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






6. Layer that will become the skin - some endocrine glands - and the nervous system.






7. Anabolism






8. Are the organelles where cellular respiration occurs.






9. 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.






10. Is the process that releases energy for use by the cell.






11. Protein synthesis






12. The total amount of genetic information available for a given species.






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






14. 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






15. 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.






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






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






18. Most chemical pollutants accidentally ingested by humans are __________ - mixed with broken down pigments in the bile - then bile is secreted into the small intestine - proceeds to the large intestine - and is expelled in the feces.






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






20. 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).






21. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






22. 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






23. 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.






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






25. Internally generated patterns of body functions - including hormonal signals - sleep - blood pressure - and temperature regulation - which have approximately a 24-hour cycle and occur even in the absence of normal cues about whether it is day or nigh






26. What phylum are snakes in?






27. 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






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






29. Must be present for photosynthesis to occur - it is not used up in the process.






30. 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.






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






32. Plants that produce flowers as reproductive organs. They have two divisions - monocots and dicots.






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






34. Controls hunger and thirst






35. 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






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






37. The number of organisms in a given community - can be above or below the carrying capacity.






38. Controls olfactory lobes (smell)






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






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






41. Refers to the birthrate of a population.






42. The phyla composed of segmented worms.






43. Veins in the leaf and are also distributed throughout the stem






44. In both living and non-living environments.






45. 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






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






47. Is the outermost layer of cells of the stem.






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






49. All store energy within their chemical bonds.






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