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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 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.






2. The phyla composed of segmented worms.






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






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






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






6. 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.






7. Is found on the stem between nodes.






8. 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.






9. Mitochondria - they constitute the center of cellular respiration.

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






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






12. Cleave strands of DNA segments at certain sites.






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






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






15. The large brain and upright posture of Homo Sapiens...






16. Are the organelles where cellular respiration occurs.






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






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






19. 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.






20. In both living and non-living environments.






21. Developed by the German scientists Schleiden and Schwann - States that all living things are made of cells - cells are the basic units of life - all cells come from pre-existing cells.






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






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






24. Engages in both passive and active transport.






25. 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.






26. The class composed of birds.






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






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






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






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






31. 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.






32. Stood upright before there was an increase in brain size.






33. Is a molecule that stores information for protein synthesis and genetic coding.






34. Subsets below the kingdom level






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






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






37. 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.






38. Chlorophyll pigments absorb photons of light - leaving the chlorophyll in a higher energy (excited) state - these then supply energy to reactions that produce ATP from ADP and Pi.






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






40. Nonvascular plants such as mosses which lack tissue for conducting food or water.






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






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






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






44. Is a disease caused by lack of vitamin C in which the body is unable to build enough collagen (a major component of connective tissue).






45. The phylum of insects (bees).






46. Synthesis






47. Mass extinctions promote diversification because _______________ - making conditions favorable for the establishment of new - diverse species.






48. 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.






49. Breaking down






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