Test your basic knowledge |

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






3. Niche






4. Controls olfactory lobes (smell)






5. Must be present for photosynthesis to occur - it is not used up in the process.






6. 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.






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






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






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






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






11. 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.






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






13. Is the number of organisms that can be supported within a particular ecosystem.






14. 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.






15. 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.






16. An opportunistic life strategy strategy. Lichens invading a bare rock area after a volcanic eruption is an example.






17. Respiratory organs within insects






18. 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.






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






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






21. Engages in both passive and active transport.






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






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






24. The pituitary gland.






25. Contains optic lobes - controls sight.






26. Plants and animals obtain usable nitrogen






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






28. Energy transformations that occur as chemicals are broken down or synthesized within the cell.






29. Develops from the morula as a thin layer of cells surrounding an internal cavity.






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






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






32. 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.






33. Cleave strands of DNA segments at certain sites.






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






35. 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






36. Channels is cell membranes that carry water between cells.






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






38. Enzymes are usually __________ to certain reactions.






39. 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.






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






41. Protein synthesis






42. Covers and protects the leaf.






43. 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.






44. The vocal cords are found in the larynx.






45. The class composed of birds.






46. The phylum of insects (bees).






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






48. 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.






49. In both living and non-living environments.






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