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5 Written questions

5 Matching questions

  1. photosynthesis
  2. symbiosis
  3. excretory system
  4. photoperiodism
  5. sepal
  1. a A type of interaction within a community that falls into one of three categories: a parasitic relationship benefits one organism and hurts the other; a commensal relationship benefits one and does not affect the other; a mutualistic relationship benefits both organisms.
  2. b The organ system that filters blood and removes nitrogenous wastes from the body in the form of urea or uric acid. In humans, the two kidneys are the vital organs of blood filtration. In annelids, nephridia fill the filtering role; Malpighian tubules do the same in arthropods. In humans, other important structures of the system are the ureters, the urinary bladder, and the urethra.
  3. c The process by which plants and other autotrophic organisms convert light energy into organic materials, such as glucose.
  4. d Green, leaflike structure that encloses and protects the unopened flower bud.
  5. e An organism's response to the length of day and night within a 24-hour period (photoperiod); in many plants, this phenomenon determines when flowering occurs.

5 Multiple choice questions

  1. A situation in which the concentration of solutes in a solution is equivalent to what it contains. There is no concentration gradient in isotonic solutions and no net flow of solutes or water.
  2. Autotrophic organisms such as plants, plankton, and chemosynthetic bacteria that are able to synthesize organic compounds using energy from the sun or chemical reactions. Producers do not have to consume other organisms to attain energy and are the foundation of every food web.
  3. Protein filaments that, along with myosin, allow muscles to contract.
  4. An energy-carrying coenzyme produced by glycolysis and the Krebs cycle. NADH carries energy to the electron transport chain, where it is stored in ATP.
  5. A phenomenon in which two alleles of the same gene are fully expressed in the phenotype when both are present in a heterozygote. Blood type is an example of codominance.

5 True/False questions

  1. autonomic nervous systemControl system of the body that functions by releasing hormones into the bloodstream.


  2. aortaThe largest artery in the body; carries oxygenated blood from the left ventricle of the heart.


  3. phylogenyThe study of the interactions and relationships of populations with each other and their abiotic environments.


  4. tendonTiny, tubule structures responsible for the filtering of blood in the kidneys of vertebrates.


  5. arteryFleshy underground storage structure composed of an enlarged portion of the stem that has on its surface buds capable of producing new plants.


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