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5 Written questions

5 Matching questions

  1. nephridium
  2. cellulose
  3. neritic zone
  4. insulin
  5. chemical cycles
  1. a Hormone secreted by the pancreas that reduces blood sugar levels. A lack of insulin can result in diabetes.
  2. b A blood filtration and excretory organ characteristic of segmented worms.
  3. c The cycles in which inorganic elements move through the biotic and abiotic aspects of an ecosystem. The two most important chemical cycles are the carbon and nitrogen cycles.
  4. d A complex carbohydrate that constitutes the cell walls of plants and protist molds.
  5. e The medium depth zone of the marine biome. Extends to 600 feet beneath the water's surface and sits on the continental shelf, hundreds of miles from any shore. Algae, crustaceans, and fish inhabit this region.

5 Multiple choice questions

  1. Animals that have developed fat and fur, hair, or feathers in order to retain heat produced by metabolic activities. Also known as endothermic. Warm-blooded animals are able to thrive in various climates, because they are minimally affected by environmental fluctuations in temperature.
  2. Part of the brain responsible for the control of involuntary functions such as breathing, cardiovascular regulation, and swallowing.
  3. The unique role a population plays in a community. A niche includes all characteristics that define the way a population exists in a community, from where the members live to what they eat, when they sleep, and how they reproduce.
  4. An evolutionary theory (proved false by Darwin) stating that species change over time by the use and disuse of structures and the inheritance of acquired traits.
  5. Structures that create movement in an organism by contracting under a stimulus from a neuron. There are three types of muscle: skeletal, which is responsible for voluntary movement; smooth, which is responsible for involuntary movement; and cardiac, which makes up the heart.

5 True/False questions

  1. pelagic zoneThe open-ocean zone at the greatest depth in a marine habitat. This zone is divided into a photic (down to 600 feet below the water's surface) and aphotic zone.

          

  2. parathyroidFour small glands embedded on the posterior surface of the thyroid gland. The parathyroid glands produce a hormone that regulates the level of calcium in the bloodstream.

          

  3. hypotonicA situation in which the concentration of solutes in a solution is lower than what an organism contains. An example is a paramecium in pond water: the organism has more solutes than its environment, so water flows into the cell by osmosis. Paramecia have evolved contractile vacuoles to keep from exploding.

          

  4. disaccharideThe transport or natural drift of molecules traveling from an area of higher concentration to an area of lower concentration. Diffusion does not require outside energy from the cell.

          

  5. hydrolysisA common biochemical reaction in which the bond between two molecules is split by the addition of a water molecule. Hydrolysis is the process that breaks down polymers and dimers. The reverse is dehydration synthesis.

          

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