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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 produced when water passes through the cell membrane by osmosis from an area of higher concentration to an area of lower concentration - to equalize water concentration.






2. Contains the chromosomes and is the site of reproduction through mitosis and meiosis.






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






4. The vocal cords are found in the larynx.






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






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






7. Develops from the morula as a thin layer of cells surrounding an internal cavity.






8. What phylum are snakes in?






9. 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.






10. An orienting response to light.






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






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






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






15. Is the sugar that lactase acts upon.






16. Super-class of vertebrae including organisms with no jaws.






17. Is the organelle where cellular reproductive processes occur.






18. 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.






19. 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.






20. Layer that will become the skin - some endocrine glands - and the nervous system.






21. Proposes that those individuals within a population that are most adapted to the environment are also the most likely individuals to produce viable offspring.






22. 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






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






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






25. Is disorganized - unravelled - DNA with histones attached.






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






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






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






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






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






31. Approximately 7 - making it neither basic (under 7) nor alkaline (over 7).






32. Controls hunger and thirst






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






34. 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.






35. Is a phylum that contains sponges.






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






37. Is found on the stem between nodes.






38. Super-class of vertebrae including organisms with jaws.






39. Contain organisms that are multicellular eukaryotes including vertebrates and invertebrates.






40. 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.






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






42. States that where random mating is occurring within a population that is in equilibrium with its environment - the gene frequencies and genotype ratios will remain constant from generation to generation. It is a mathematical formula that shows why re






43. Covers and protects the leaf.






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






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






46. 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






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






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






49. All store energy within their chemical bonds.






50. Are organic cofactors or coenzymes that are required by some enzymatic reactions.