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5 Written questions

5 Matching questions

  1. circulatory system
  2. energy pyramid
  3. vitamins
  4. photic zone
  5. acetylcholine
  1. a Literally, zone with light. The photic zone is part of the marine pelagic zone and extends to 600 feet below the surface of the ocean. Photosynthetic plankton as well as bony fish, sharks, and whales inhabit this zone.
  2. b System of organs and blood that brings nutrients and oxygen to cells and carries away wastes. In higher vertebrates, the system has a pulmonary and systemic circuit. The pulmonary circuit carries blood to the lungs to be oxygenated, while the systemic circuit carries oxygenated blood to the body. Vertebrates have a closed circulatory system, while arthropods have an open system.
  3. c Energy in a community can be depicted as a pyramid of food or biomass. The availability of food, biomass, and energy from the trophic level of producers up through each subsequent level on the food web is approximately 10 percent of that available in the previous trophic level.
  4. d A neurotransmitter released by neurons to excite an action potential or trigger a muscle to contract.
  5. e Complex molecules that usually serve as coenzymes, assisting in physiological processes.

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. Process by which liquids or small solid particles are taken into a cell in the form of small vesicles that are produced through the invagination of the cell membrane.
  3. One in a class of plant hormones that stimulates (among other things) cell elongation, secondary tissue growth, and fruit development.
  4. The evolutionary process by which ancestral forms of an organism are diversified through adaptation to new environments.
  5. One of the nitrogen-containing bases in DNA and RNA nucleotides. There are five nitrogenous bases in living organisms. DNA is composed of adenine, thymine, guanine, and cytosine. RNA is composed of adenine, uracil, guanine, and cytosine.

5 True/False questions

  1. runnerAn emulsifier of fats secreted by the liver and stored in the gallbladder for release in the small intestine.


  2. disaccharideA longitudinal rod of cells that forms in the least developed chordates and in embryonic stages of more developed chordates.


  3. gametophyteThe internal tissue of a leaf between the epidermal cells; specialized for photosynthesis. Contains the palisade and spongy layer.


  4. oxidative phosphorylationThe first population to move into a geographic location and begin the process of ecological succession.


  5. plasmidsCircular DNA molecules found in prokaryotes.


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