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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. 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.






2. 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.






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






4. The sharp boundary of an ecosystem.






5. Enzymes are usually __________ to certain reactions.






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






7. Plants and animals obtain usable nitrogen






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






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






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






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






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






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






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






15. 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






16. An enzyme is unaffected by the reactions it catalyzes






17. Is the sugar that lactase acts upon.






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






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






20. In both living and non-living environments.






21. Cleave strands of DNA segments at certain sites.






22. 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.






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






24. Is the waxy protective outer coating of leaves.






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






26. Decomposition of living matter for consumption.






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






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






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






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






31. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






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






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






34. Carbon - Hydrogen - Oxygen - and Nitrogen






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






36. The bronchi lead to the two lungs where they branch out in all directions into smaller tubules known as bronchioles.






37. 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






38. Is a behavior that is learned during a critical point (often very early) in an individual's life. Imprinting enables the young the recognize members of their own species.






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






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






41. Refers to the birthrate of a population.






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






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






44. 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






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






46. 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






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






48. 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.






49. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






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