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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. The transfer of electrons.






2. 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






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






4. 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.






5. Decomposition of living matter for consumption.






6. A hydrogen bond involves the ________________ and can be easily broken.






7. 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.






8. Process in which elements - chemical compounds - and other forms of matter are passed from one organism to another and from one part of the biosphere to another.






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






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






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






12. Are formed when the plasma membrane of a cell encloses a molecule outside the membrane - then releases a membrane bound sack containing the desired molecule into the cytoplasm. This process allows the cell to absorb molecules that are larger in size






13. Cleave strands of DNA segments at certain sites.






14. The systematic search for individuals with a specific genotype in a delineated population.






15. Synthesis






16. Is found in the root cap and is responsible for quick growth in the roots.






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






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






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. Covers and protects the leaf.






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






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






23. An orienting response to light.






24. 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.






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






26. 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






27. Niche






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






29. The phyla of sponges.






30. Respiratory organs within insects






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






32. Disease causing






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






34. It secretes saliva which enters the digestive tract and aids the digestive process.






35. 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.






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






37. The size of a cell is limited by the ratio of its surface area to volume.






38. Is a protein - which is a polymer of amino acids. They generally have the suffix -ase- like lactase.






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






40. Provide rigidity to plant cells (and some bacteria) and are not found within animal cells.






41. 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.






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






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






44. Controls balance and muscle coordination






45. 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.






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






47. The trachea includes the windpipe or larynx in its upper portion - and the glottis - an opening that allows the gases to pass into the two branches known as the bronchi.






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






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






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