A solution with a pH of 3
A) is more alkaline than a solution with a pH of 2.
B) has a higher concentration of OH- than a solution with a pH of 4.
C) is neutral.
D) is more acidic than a solution with a pH of 3.5.
A
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In E. coli, an isomer of lactose binds with the lactose operon:
a. repressor, preventing it from binding to the operator. This allows the lacZ and lacY genes to be transcribed. b. operator, preventing it from binding to the repressor. This allows the lacZ and lacY genes to be transcribed. c. repressor, helping it bind to the operator. This prevents the lacZ and lacY genes from being transcribed. d. operator, preventing RNA polymerase from being recruited. This prevents the lacZ and lacY genes from being transcribed. e. operator, recruiting RNA polymerase. This allows the lacZ and lacY genes to be transcribed.
Organisms share many conserved core processes and features, including transcription and translation using a uniform genetic code. Scientists have used these shared processes and features in biotechnology
For example, for the process of some transformations, a plasmid is constructed when a eukaryotic gene of interest is added with an antibiotic resistant gene such beta-lactamase, which is used for ampicillin resistance. This plasmid is then inserted into a prokaryotic bacterial cell, such as E-coli, through a transformation process that leads to the production of the product protein from the eukaryotic organism. To culture the bacteria and obtain the protein product, the bacteria must grow. Select the appropriate condition to determine if the plasmid has entered the E-coli bacterial cell. A) Nutrient broth to which no antibiotic has been added. B) Water to which ampicillin has been added. C) Nutrient broth to which ampicillin has been added. D) Nutrient broth to which other resistant bacteria have been added.
Explain the collection and flow of lymph
What will be an ideal response?
Gene sharing is:
a. one way that a new molecular function can arise. b. another form of gene duplication. c. is a form of molecular exaptation. d. A and B. e. A and C.