Biology, 17.12.2019 01:31 loveyeti106838
You are given an experimental problem involving control of a geneʹs expression in the embryo of a particular species. one of your first questions is whether the geneʹs expression is controlled at the level of transcription or translation. which of the following might best
give you an answer?
a. you explore whether there has been alternative splicing by examining amino acid
sequences of very similar proteins.
b. you measure the quantity of the appropriate pre-mrna in various cell types and
find they are all the same.
c. you assess the position and sequence of the promoter and enhancer for this gene.
d. an analysis of amino acid production by the cell shows you that there is an increase at
this stage of embryonic life.
e. you use an antibiotic known to prevent translation.
Answers: 3
Biology, 21.06.2019 19:00
Look at the images of different rocks. which rocks have a fine-grained texture? check all that apply. 1 2 3 4 5
Answers: 1
Biology, 22.06.2019 03:00
In 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? in 1959, doctors began using the powerful antibiotic methicillin to treat infections of staphylococcus aureus, but within two years, methicillin-resistant strains of s. aureus (mrsa) appeared. how did the resistant strains of s. aureus emerge? staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. these bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. over time, these resistant individuals became increasingly common. in response to treatment of staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.
Answers: 3
You are given an experimental problem involving control of a geneʹs expression in the embryo of a pa...
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