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






2. 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.






3. 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.






4. The phyla of round worms.






5. Contain one celled eukaryotes such as algae and protozoa.






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






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






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






9. 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.






10. 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.






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






12. Bacteria break ammonia into nitrites - then into nitrates that are usable by plants; volcanic activity produces ammonia and nitrates that enter the soil and can be absorbed by plants; lightning reacts with atmospheric nitrogen to form nitrates that a






13. Carbon - Hydrogen - Oxygen - and Nitrogen






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






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






16. Is comprised of all the organisms that interact within a given ecosystem whether or not it is at carrying capacity.






17. An orienting response to light.






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






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






20. Is the outermost of the three main layers of an embryo.






21. The phyla of sponges.






22. 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.






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






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






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






26. 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.






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






28. Refers to the birthrate of a population.






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






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






31. Covers and protects the leaf.






32. 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






33. 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.






34. Is secreted by the adrenal cortex to promote sodium reabsorption in the kidney.






35. 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.






36. 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.






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






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






39. 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.






40. A type of innate behavior (instinct.) The FAP is a preprogrammed response to a particular stimulus (known as a releaser stimulus). FAP's include courtship behaviors and feeding of young. These are not learned behaviors - they are automatically perfor






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






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






43. Is composed of a double layer (bilayer) of phospholipids with protein globules imbedded within the layers. The construction of the membrane allows it to aid the function of the cell by permitting entrance and exit of molecules as needed by the cell.






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






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






47. Consists of undifferentiated cells capable of quick growth and specialization. It is responsible for elongation of the stem.






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






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






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