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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. 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.






2. Controls balance and muscle coordination






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






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






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






6. All store energy within their chemical bonds.






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






8. Are more closely related to Homo Sapiens than to other apes - but Homo Sapiens did not evolve from chimpanzees.






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






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






11. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






12. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






13. Decomposition of living matter for consumption.






14. The phyla of sponges.






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






16. Disease causing






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






18. The pituitary gland.






19. 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.






20. Provide rigidity to plant cells (and some bacteria) and are not found within animal cells.






21. The vocal cords are found in the larynx.






22. Are where the sugars synthesized by photosynthesis travel through to various parts of the plant.






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






24. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






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






26. 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.






27. Is disorganized - unravelled - DNA with histones attached.






28. Stood upright before there was an increase in brain size.






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






30. Is the sugar that lactase acts upon.






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






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






33. 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






34. Is the organelle where cellular reproductive processes occur.






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






36. An enzyme is unaffected by the reactions it catalyzes






37. 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






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






39. An orienting response to light.






40. Super-class of vertebrae including organisms with no jaws.






41. Are produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






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






43. 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.






44. In both living and non-living environments.






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






46. Cleave strands of DNA segments at certain sites.






47. Covers and protects the leaf.






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






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






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