GPCR taste receptor signaling can result in
A. Changes in G? GDP/GTP ratio
B. Changes in intracellular Ca levels
C. changes in membrane permeability
D. All of the above
Answer: B. Changes in intracellular Ca levels
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Which of the following is true regarding transformed cells that are plated on growth media containing ampicillin?
A. Each colony began with one antibiotic resistant cell. B. All cells in a single colony are resistant to the antibiotic ampicillin. C. Only the founder cell of a single colony is resistant to the antibiotic ampicillin. D. Cells that did not take up the plasmid will survive on the medium. E. Each colony began with one antibiotic resistant cell and all cells in the colony are resistant to the antibiotic ampicillin.
The Dust Bowl of the 1930s was the result of
destruction of a. deserts. b. chaparrals. c. tallgrass prairies. d. shortgrass prairies. e. temperate deciduous forests
Exponential growth is characteristic of populations that inhabit favorable environments at low densities
Indicate whether the statement is true or false
Three major types of RNAs are mRNA, rRNA, and tRNA. For each of the conditions below, predict the consequences in terms of the population of proteins being synthesized in a particular cell
What qualitative and quantitative changes, if any, are expected in the individual protein involved (if one is involved) and in the population of proteins in this cell? (a) a frameshift mutation in the heterozygous state (b) a deletion of a significant proportion of ribosomal genes (rDNA)