Answer:
Lactose
Explanation:
Lac operon is a type of bacterial operon, characterized a cluster of genes regulated by a single promoter. It is usually contains an operator, promoter, a terminator, and three structural genes (lacA, lacY, and lacZ), which are responsible for lactose metabolism.
The lac operon is an inducible operon because it becomes activated in the presence of lactose.
<span>The robins and sparrows living together in the same tree in a forest ecosystem would represent an ecological niche. A ecological niche is the interactions between animals who live close to or with each other. These animals can be prey, competitors for food or be neutral towards each other.</span>
Paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.
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Need of contractile vacuole for paramecium</h3>
In salt water, the solute concentration outside the cell is more than inside the cell so the water flows out of the cell down the concentration gradient. Therefore contractile vacuoles are not required for expelling water for most protozoan living in salt water.
While on the other hand, paramecium lives in fresh water so contractile vacuole is required for removing excess water so we can conclude that paramecium needs contractile vacuole due to its different environment from other protozoan that lives in salt water.
Learn more about contractile vacuole here: brainly.com/question/15648413
Answer:
The correct answer is vasogenic edema.
Explanation:
A kind of cerebral edema in which the blood-brain barrier is disrupted is termed as vasogenic cerebral edema. It refers to extracellular edema that primarily influences the white matter through leakage of fluid from the capillaries.
It is primarily witnessed surrounding the brain tumors, that is, both primary and secondary and the cerebral abscesses, however, some of the vasogenic edema may be witnessed around the developing cerebral hemorrhage and cerebral contusion.
Answer:
Spiders have 2 body segments. The front is called a cephalothorax or prosoma and the abdomen, also known as opisthosoma.
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