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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. An orienting response to light.






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






3. 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.






4. Ended with the extinction of the dinosaurs.






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






6. Anabolism






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






8. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






9. Is the waxy protective outer coating of leaves.






10. Enzymes are usually __________ to certain reactions.






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






12. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






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






16. An enzyme is unaffected by the reactions it catalyzes






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






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






19. Is a phylum that contains sponges.






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






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






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






23. In order to become an established part of an island ecosystem there must be a populations large enough to ensure _________ - a food source - a suitable habitat - and a source of moisture.






24. Covers and protects the leaf.






25. Is the major component of sand and is the most abundant element found in the lithosphere. It is not recycled.






26. Plants and animals obtain usable nitrogen






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






28. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






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






30. Controls olfactory lobes (smell)






31. In DNA Thymine pairs with...






32. Respiratory organs within insects






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






34. The phyla composed of segmented worms.






35. 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






36. 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






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






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






39. Is a molecule that stores information for protein synthesis and genetic coding.






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






41. There was extensive radiation of fish during the Devonian and Silurian periods within the Paleozoic Era.






42. Breaking down






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






44. 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.






45. 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






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






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






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






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






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