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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 the earliest period of the Paleozoic era. Began with the Cambrian explosion - this explosion of life resulted in the representatives of most of the modern phyla being present.






2. Anabolism






3. Cleave strands of DNA segments at certain sites.






4. Controls balance and muscle coordination






5. Has loosely packed cells that allow for gas and moisture exchange.






6. In both living and non-living environments.






7. Is a kind of plain characterized by a warm climate - grassland - and seasonally dry climate conditions.






8. Engages in both passive and active transport.






9. Are easily converted to ATP - but the main energy products of the Krebs cycle liberate electrons then used in the electron transfer reactions.






10. 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.






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






12. Is the sugar that lactase acts upon.






13. Layer that will become the gut lining as well as some accessory structures.






14. 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.






15. An enzyme is unaffected by the reactions it catalyzes






16. Contains optic lobes - controls sight.






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






18. The transfer of electrons.






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






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






21. 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.






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






23. Decomposition of living matter for consumption.






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






25. Is very rare and is not absorbed by plant leaves. Phosphorous is nearly always found in solid form.






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






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






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






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






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






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






32. Biotic (living) factors such as population and food source - and abiotic (non-living) factors such as weather - temperature - soil features - sunlight).






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






34. 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.






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






36. The phylum of insects (bees).






37. Process of breaking down complex materials (foods) to form simpler substances and release energy.






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






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






40. All store energy within their chemical bonds.






41. High temperatures






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






43. Produce adrenaline. This hormone is a well-known constrictor of blood vessels.






44. The process whereby cells build molecules and store energy (in the form of covalent chemical bonds).






45. 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.






46. A suffix meaning 'to break apart.' O || ||






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






48. 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






49. In DNA Thymine pairs with...






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