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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. Where protein synthesis occurs. They float unattached in the cytoplasm. They contain RNA that is specific to their function in protein formation.






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






3. Most fossils of Hominids are from continents other than...






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






5. Covalent bonds






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






7. Assumes that there are periods of stability during which little evolutionary change occurs - and that speciation can occur rapidly over a very short period of time.






8. 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.






9. The pharynx is between the nasal passage and the trachea. Air passes into the body via the nasal passage - then passes through the pharynx and on to the trachea.






10. Is the organelle where cellular reproductive processes occur.






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






12. The phyla of round worms.






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






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






15. The lineage that led to the modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.






16. The phylum of insects (bees).






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






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






19. Ended with the extinction of the dinosaurs.






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






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






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






23. 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.






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






25. Occurs when an individual from an adjacent population of the same species immigrates and breeds with a member of a previously locally isolated group - resulting in a change in the gene pool.






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






27. 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.






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






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






30. The transfer of electrons.






31. Plants and animals obtain usable nitrogen






32. 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.






33. The effect of a substrate concentration on the initial reaction rate in the presence of a limited amount of enzyme: _________________ as the concentration of substrate is increased until all the enzymes are used - then the reaction rate will level of






34. Respiratory organs within insects






35. Disease causing






36. 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






37. Is a substance that changes the speed of a reaction without being affected itself.






38. Absorb a photon of light and is found in the grana of the chloroplast.






39. The phyla composed of segmented worms.






40. Fruits that develop from a single ripened ovary (apple - olive - acorn - cucumber).






41. In DNA Thymine pairs with...






42. Inorganic phosphate






43. Covers and protects the leaf.






44. Anabolism






45. 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.






46. Is the process that releases energy for use by the cell.






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






48. Are membrane-bound organelles that contain digestive enzymes that digest dead or unused material within the cell or materials absorbed by the cell for use.






49. Is composed of an anterior and posterior lobe. The stalk of the lobe is connected to the hypothalamus. Antidiuretic Hormone (AH) is produced in the hypothalamus and stored in the posterior pituitary. Upon nervous stimulation from the hypothalamus - t






50. An enzyme is unaffected by the reactions it catalyzes