Answer:
sjbbusuvsuvuvsvusiggdgkaywbld?
Answer:
The lac repressor is not bound to the operon.
Explanation:
The lac repressor is a protein encoded by the lac I gene. In absence of lactose, the lac repressor binds to the operator sequence of the lac operon and does not allow the RNA polymerase to express the operon. However, as lactose enters the cell from the medium, the beta-galactosidase enzyme converts it into allolactose which in turn serves as an inducer of the lac operon. Binding of allolactose to lac repressor trigger conformational changes in the protein and renders it unable to bind to the operator. The RNA polymerase is allowed to express the operon.
9:1
What is coagulation test?
When you cut yourself, clotting stops the blood from becoming excessive. Your blood should not clot as it flows through your veins, though. These clots have the potential to develop and move through your bloodstream to your heart, lungs, or brain. A heart attack, stroke, or even death could result from this.
Coagulation assays assess the speed and consistency of blood clotting. Your doctor can use testing to determine your risk of excessive bleeding or the occurrence of clots (thrombosis) in one of your blood arteries.
Venous blood samples for coagulation assays should be drawn into a blue top tube containing 3.2% buffered sodium citrate to produce whole blood samples with a 9:1 blood to anticoagulant ratio.
To know more about coagulation test click on the following link brainly.com/question/28199514
#SPJ4
Facilitated diffusion or facilitated transport is also known as passive-mediated transport is the movement of molecules or ions across a biological membrane through transmembrane integral proteins. This process does not require chemical energy from ATP as such molecules and ions use the movement of gradient concentration for diffusion.
