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






2. 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






3. 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






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






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






6. This is a carboxyl group and is the signature group found within organic acids.






7. Disease causing






8. 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.






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






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






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






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






13. 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.






14. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






15. Is the outermost of the three main layers of an embryo.






16. 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






17. 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.






18. The solid mass of cells resulting from the cleavage of the ovum before the formation of a blastula.






19. 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






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






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






22. Engages in both passive and active transport.






23. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






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






25. Ended with the extinction of the dinosaurs.






26. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






27. 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).






28. 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






29. Has an equal (50%) chance of being passed from a carrier mother to a son or a daughter.






30. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






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






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






33. Controls olfactory lobes (smell)






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






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






36. Controls balance and muscle coordination






37. High temperatures






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






39. Cleave strands of DNA segments at certain sites.






40. 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.






41. The large brain and upright posture of Homo Sapiens...






42. Anabolism






43. Enzymes are usually __________ to certain reactions.






44. Contains optic lobes - controls sight.






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






46. What phylum are snakes in?






47. Synthesis






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

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






50. 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







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