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of 613 available terms
(13 exact duplicates found)

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5 Written questions

5 Matching questions

  1. transduction
  2. conservation biology
  3. foot
  4. gel electrophoresis
  5. microevolution
  1. a a technique for separating and purifying macromolecules; a mixture of molecules is placed on a gel between a positively charged electrode and a negatively charged one; negative charges on the molecules are attracted to the positive electrode, and the molecules migrate toward that electrode; the molecules separate in the gel according to their rates of migration
  2. b the transfer of bacterial genes from one bacterial cell to another by a phage.
  3. c in an invertebrate animal, a structure used for locomotion or attachment, such as the muscular organ extending from the ventral side of a mollusc.
  4. d a change in a population's gene pool over a succession of generations; evolutionary changes in species over relatively brief periods of geologic time
  5. e the science of species preservation; the scientific study of ways to slow the current high rate of species loss

5 Multiple choice questions

  1. the union (mating) of two bacterial cells or protists cells and the transfer of DNA between two cells.
  2. a slow but steady rise in Earth's surface temperature, caused by increasing concentrations of greenhouse gases (such as CO2 and CH4) in the atmosphere
  3. the series of events from birth through reproduction to death
  4. a shelled egg in which an embryo develops within a fluid-filled sac and is nourished by yolk; produced by reptiles, birds, and egg-laying mammals, it enables them to complete their life cycles on dry land.
  5. a body cavity that is in direct contact with the wall of the digestive tract.

5 True/False questions

  1. hemophiliaa human genetic disease caused by a sex-linked recessive allele; characterized by excessive bleeding following injury


  2. gastrulathe embryonic stage resulting from gastrulation in animal development. Most animals have a gastrula made up of three layers of cells; ectoderm, endoderm, and mesoderm.


  3. hominida species on the human branch of the evolutionary tree; a member of the family Hominidae, including Homo sapiens and our ancestors


  4. pedigreea family tree representing the occurrence of heritable traits in parents an offspring across a number of generations


  5. radiometric datinga method for determining the age of fossils and rocks from the ratio of a radioactive isotope to the nonradioactive isotope(s) of the same element in the sample


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