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






2. Small - green - heart-shaped gametophyte plant form of a fern that can make its own food and absorb water and nutrients from the soil






3. Is the sugar that lactase acts upon.






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






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






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






7. The total amount of genetic information available for a given species.






8. A length of DNA (with corresponding histones) is responsible for the production of a certain protein that causes a particular trait to be expressed in an organism.






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






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






11. 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.






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






13. Contains many genes and is a structure comprised of linear DNA and associated proteins.






14. In DNA Thymine pairs with...






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






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






17. Is a compound fruit that develops from many ovaries of a single flower fusing together (raspberry).






18. Is a coenzyme required in the synthesis of collagen.






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






20. 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.






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






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






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






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






25. The phyla of round worms.






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






27. 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






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






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






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






31. Between the endoderm and ectoderm - layer that will eventually form the muscles - and organs of the skeletal - circulatory - respiratory - reproductive - and excretory systems.






32. Are cells involved in immunity and are produced in bone marrow as stem cells.






33. Produce antibodies into the bloodstream that find and attach themselves to foreign antigens (toxins - bacteria).






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






35. 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).






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






37. Cleave strands of DNA segments at certain sites.






38. 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.






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






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






41. 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.






42. Are the monomers that form nucleic acids - containing a sugar - phosphate group - and a nitrogenous base.






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






44. 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.






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






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






47. The phyla composed of segmented worms.






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






49. Some enzymes contain a __________ component that is essential to their functions.






50. The transfer of electrons.







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