In interference competition, two or more populations use the same limiting resource
Indicate whether the statement is true or false.
ANSWER: False - exploitative competition
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The filamentous DNA phages are unusual, because they
A) are released from the host without the host being lysed. B) have linear genomes. C) replicate without a host. D) are released from the host without being lysed and have linear genomes.
Consider a mutant organism that is unable to make the amino acid arginine. Knowing that the
metabolic pathway to production of arginine is ornithine ? citrulline ? arginosuccinate ? arginine, you test the ability of the mutant to grow in the presence of each one of these compounds, providing just one of the compounds in each of your tests. You find that the mutant can grow in the presence of arginosuccinate or arginine, but not in the presence of citrulline or ornithine. From this you can conclude that the product of the gene mutated in the mutant is most directly involved in production of ____.
a. arginine from ornithine b. arginosuccinate from citrulline c. citrulline from ornithine d. arginine from arginosuccinate e. arginosuccinate from ornithine
Science
A. answers questions concerning values and morals. B. creates theories and laws that are always true. C. is a process used to arrive at a solution to a problem. D. has all of the answers to the problems that plague mankind.
You have a friend who tells you she is lactose intolerant. She asks you to explain what this means. You say to her:
A) "You cannot digest milk because you do not have the enzyme to break down the sugar in the milk." B) "You cannot digest milk because you cannot absorb it in your intestines." C) "You cannot digest the milk because you do not have the enzyme to break down the lipid in the milk." D) "You cannot digest the milk because you do not have the enzyme to break down the protein in the milk." E) "You are allergic to milk."