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






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






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






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






5. 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.






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






7. 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.






8. Is the control of protein synthesis. Genetic traits are expressed and specialization of cells occur as a result of the combination of proteins produced by the DNA of a cell.






9. Is made of stacked cells connected by sieve plates that allow nutrients to pass from cell to cell. They transport food made in the leaves (by photosynthesis) to the rest of the plant).






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






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






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






13. 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.






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






15. 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.






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






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






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






19. Transparency - polarity - high specific heat - and density (lower density when solid than when liquid.).






20. When the water concentration inside and outside the cell is equal - It is said to be in an...






21. 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.






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






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






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






25. Is a kingdom that includes algae and protozoa.






26. Is the period when the cell is active in carrying on the function it was designed to perform within the organism. Cells spend much more time in interphase than in cell division.






27. (of some plants or fungi) feeding on dead or decaying organic matter






28. The part of the earth that contains all living things - including the atmosphere (air) - the lithosphere (earth) - and the hydrosphere (water).






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






30. 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.






31. Niche






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






33. 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.






34. The phylum of insects (bees).






35. Anabolism






36. 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.






37. Transfers water and does not require sieve plates to allow nutrients through.






38. 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






39. When stems bend toward the light it is due to _____________ the hormone auxin - in response to light - migrates from the light to the dark side of the shoot tip. The cells on the dark side now contain more auxin - which causes the cells on that side






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






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






42. The role played by an organism in its food chain.






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






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






45. The phyla composed of segmented worms.






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






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






48. Has extreme hot or cold temperatures - with very low precipitation - sandy or rocky terrain - sparse vegetation (mainly succulents) - small animals - rodents - and reptiles.






49. The process of forming eggs and sperm cells in the reproductive organs.






50. A reaction that adds water to another compound. (2 hydrogens - 1 oxygen).