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What else can I help you with?
Lactose uptake in E. coli is an example of which type of transport?
secondary active transport
Is E. coli lactose fermenter?
yes it is lactose positive
What happen to lac repressor in E. coli when lactose is present?
E. coli binds with lactose which changes its conformation so that it no longer binds to DNA. This allows the lactose operon to be transcribed.
How many genes in the lac operon are found in e. coli?
My answer is 3, I am pretty sure I am right, but I would double check to make sure. I am in ninth grade taking biology at PineTree.
Lactose in take in E. coli?
it is by lac operon syastem
An E. coli cell without a functional LacI gene is expected to -be unable to transport lactose into te cell wall -be unable to metabolize lactose within the cell wall -always produce Beta-galactosidas?
Always produce Beta-galactosidas
What would you assume if you found RNA transcripts of lactose-utilizing genes within E coli?
the presence of lactose
To break down lactose Escherichia coli need three different what?
no
What happens when e coli is mixed with glucose sucrose and lactose?
E. coli can metabolize glucose and grow well. It can also metabolize sucrose, but usually not as efficiently as glucose. However, E. coli typically cannot metabolize lactose unless it carries the necessary enzymes, such as beta-galactosidase from the lac operon. Without the ability to metabolize lactose, E. coli will not grow as well in a mixture of glucose, sucrose, and lactose compared to a mixture of only glucose and sucrose.
What is the function of an operator in bacteria?
The function of an operator in bacteria can be defined as the required for the transport and metabolism of the lactose in Escherichia coli and some other enteric bacteria. It consist of three adjacent structural genes.
How does E. coli benefit by making enzymes to utilize lactose only when lactose is in the cellular environment?
By controlling gene expression, E. coli bacteria conserve resources and produce only those proteins that are needed
What does Escherichia coli need to break down lactose?
Escherichia coli needs the enzyme β-galactosidase to break down lactose. This enzyme cleaves lactose into its constituent sugars, glucose and galactose, which can then be used by the bacteria as a source of energy.
