The lac operon, which stands for Lactose operon is known as an inducible system. It is the an operon required for the transport and metabolism of lactose some enteric bacteria (Echerichia coli for example). The Lac operon is only activated in the presence of a key molecule. The key molecule is lactose.
From the given options the following best describes the Lac operon:
D. The repressor is freed from the operator when lactose is present.
<span>rocks undergo this when stress builds up past a certain point, called the ... is any fracture or system of fracture or system of fractures along which earth ... the fracture is caused by horizontal shear and movement is mainly horizontal </span><span>many kind of rocks that make up Earth's crust fail when stress is applied too quickly ... The resulting fracture or system of fractures along which movement occurs.</span>
They stay in deeper warmer water and move allot and eat a lot of bait food
The statement which best explains why Pepsin will not break down starch is that enzymes only work for specific substrates.
<h3>
What is an Enzyme?</h3>
This is referred to as a biological catalyst which helps to speed the rate of chemical reaction in the body by lowering the activation energy needed to start it up. it is also proteinous and can be denatured by heat and other substance such as chemicals.
They are also substrate specific which means they can't act on any type of substance. For example enzyme such as amylase acts on only starch while pepsin acts on only protein.
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Atomic number <span>increases by exactly one from element to element hope this helps you<3</span>
