The steps in the pathogen-specific response do not include
A. responding to the pathogen.
B. development of antibodies.
C. recognizing the pathogen.
D. triggering the hypersensitive response.
E. the pathogen releases distinctive proteins.
B. development of antibodies.
The pathogen-specific response occurs when a pathogen enters a plant cell and resleases proteins. If the plant has an R gene that matches one of these proteins, it will bind to it initiating a hypersensitivity response. Antibodies are found in animals.
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A mouse genomic library is constructed so that the number of clones equals one genomic equivalent. Is it likely that this library contains the entire mouse genome?
The mouse genome consists of 2,700 Mb. A genomic library is constructed using BAC vectors and overlapping fragments of the mouse genome. The average size of the mouse DNA inserts is 200 kb. A) No; by chance some parts of the genome will be represented more than once and others not at all. B) Yes; that is a sufficient number clones for every part of the genome to be represented one time. C) No; the restriction enzyme used to fragment the genome will delete some DNA on the ends of clones.
Which of the following is not a step in the process of natural selection?
A. The population produces more offspring than the environment can support B. members of a population possess heritable variations C. Over multiple generations of reproducing, a larger proportion of the population will have those favorable traits and thus adaptation has occurred. D. Individuals who have favorable traits survive and reproduce more than those individuals lacking such traits. E. People select which individuals breed and which ones do not.
Which of the following fully explains the concept of humanity's ecological footprint?
A. the total amount of land and water required to support the occupation, consumption, and waste production of the global population B. the amount of land occupied by people, buildings, and structures C. the amount of energy and water used in household consumption D. the amount of land needed to feed the global population E. the amount of land required to support the consumption and waste production of the global population
The immotile sperm develop motility in about 18 hours after arriving at the long, coiled tube called what?
A. Testis B. Vas deferens C. Semiferous tubules D. Epididymis