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






2. Allows for the genetic code to be preserved in future generations of cells.






3. 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.






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






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






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






7. Is a compound fruit that forms from several ovaries of separate flowers that fuse together during ripening (strawberry - or pineapple).






8. High temperatures






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






10. Anabolism






11. An enzyme is unaffected by the reactions it catalyzes






12. The phylum of insects (bees).






13. Respiratory organs within insects






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






15. Super-class of vertebrae including organisms with jaws.






16. It secretes saliva which enters the digestive tract and aids the digestive process.






17. The transfer of electrons.






18. A hydrogen bond involves the ________________ and can be easily broken.






19. The phyla of sponges.






20. Carbon - Hydrogen - Oxygen - and Nitrogen






21. Is a phylum that contains sponges.






22. The physical place where a particular organism lives. It must include all the factors that will support its life and reproduction.






23. The process of forming eggs and sperm cells in the reproductive organs.






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






25. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






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






27. Cleave strands of DNA segments at certain sites.






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






29. Covers and protects the leaf.






30. 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






31. Secretes insulin to lower blood sugar and maintain equilibrium. A person eats three candy bars. Within minutes this endocrine gland affects blood-glucose homeostasis.






32. Ended with the extinction of the dinosaurs.






33. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






34. Enzymes are usually __________ to certain reactions.






35. Contains many genes and is a structure comprised of linear DNA and associated proteins.






36. 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.






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






38. The class composed of birds.






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






40. In DNA Thymine pairs with...






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






42. 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






43. Covalent bonds






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






45. Digestive enzymes - hydrochloric acid - and gastric juices which aid in digestion. The mucous secreted by the stomach protects the stomach lining from the acids and juices.






46. When the water concentration inside and outside the cell is equal - It is said to be in an...






47. The cells of a developing embryo (at the gastrula stage) differentiate into layers - that will later develop into different tissues and organs - including the mesoderm - ectoderm - and endoderm.






48. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






49. 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.






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