Biology, 30.11.2019 04:31 kseniyayakimov
The cholera bacterium vibrio cholerae produces an enzyme toxin that chemically modifies a g protein involved in regulating salt and water secretion in intestinal cells. stuck in its active form, the modified g protein stimulates the production of a high concentration of camp, which causes the intestinal cells to secrete large amounts of salts into the intestines, with water following by osmosis. an infected person quickly develops profuse diarrhea and if left untreated can soon die from the loss of water and salts.
what is the basic effect of the cholera toxin?
a. the basic effect of the cholera toxin is loss of specificity of the response of intestinal cells to a
b. the basic effect of the cholera toxin is premature termination of a signaling pathway.
c. the basic effect of the cholera toxin is signal amplification.
Answers: 3
Biology, 22.06.2019 06:00
In "the man in the water," what was the remarkable occurrence that rosenblatt reported?
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Biology, 22.06.2019 13:00
14) whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.
Answers: 2
Biology, 22.06.2019 15:30
The hardy-weinberg principle is that genetic frequencies in a population? will remain stable from generation to generation will always be changing will not be affected by environmental changes are always in a 3: 1 ratio
Answers: 3
The cholera bacterium vibrio cholerae produces an enzyme toxin that chemically modifies a g protein...
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