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






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






3. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






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






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






6. The class composed of birds.






7. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






10. Controls olfactory lobes (smell)






11. An enzyme is unaffected by the reactions it catalyzes






12. 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






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






14. 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.






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






16. Contains organisms that are multicellular eukaryotes including molds and mushrooms.






17. 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






18. Protein synthesis






19. 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.






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






21. Attaches to an enzyme and blocks the enzyme reaction rather than enhancing it - like a prosthetic group would.






22. 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.






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






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






25. Decomposition of living matter for consumption.






26. Is a phylum that contains jellyfish - hydra - etc.






27. Refers to the birthrate of a population.






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






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






30. 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.






31. Contains multicellular photosynthetic eukaryotic organisms including gymnosperms and angiosperms.






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






33. 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.






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






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






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






37. Disease causing






38. 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).






39. Is weaker than ionic - covalent - disulfide - or double bonds.






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






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






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






43. Covalent bonds






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






45. The transfer of electrons.






46. 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






47. Is the organelle where cellular reproductive processes occur.






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






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






50. Is the sugar that lactase acts upon.