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






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






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






4. Refers to the birthrate of a population.






5. The number of organisms in a given community - can be above or below the carrying capacity.






6. 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.






7. Breaking down






8. 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.






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






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






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






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






13. Covalent bonds






14. 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






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






16. What phylum are snakes in?






17. Mitochondria - they constitute the center of cellular respiration.

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18. Disease causing






19. Is the sugar that lactase acts upon.






20. Includes all living and nonliving components of the Earth to support living things.






21. 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.






22. A sex-linked recessive disorder carried on the x chromosome in which an individual cannot perceive certain colors.






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






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






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






26. The individual we recognize as an adult fern.






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






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






29. 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.






30. 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






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






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






33. Covers and protects the leaf.






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






35. 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






36. Contains optic lobes - controls sight.






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






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






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






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






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






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






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






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






45. 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






46. In both living and non-living environments.






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






48. Is an ion that binds to an enzyme making it more able to catalyze a reaction.






49. 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).






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