The cAMP receptor protein (CRP) is said to be responsible for positive regulation of the lac operon because (D) CRP bound to the CRP-binding site stimulates the transcription of the lac operon.
CRP is a regulatory protein. It binds to the cAMP and causes a conformational change. This allows the CRP to bind to a specific site at the promoter region of the DNA. This then activates the transcription process.
Lac operon is a group of genes that allow the uptake of glucose in bacteria. There are four components of lac operon: regulator gene, promoter gene, operator gene and structural genes. The machinery of operon is turned on the lactose itself.
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Answer: Heavy drinking
Explanation:
Heavy drinking in the college campus increases the chances of the misbehave among students and other people.
There can be risky behavior, such as smoking cigarettes, drugs or having sex with multiple partners.
These behavior gets favored in effect of alcohol. The person is not conscious and can behave in a very bad way to the people around him.
Acorn worms look nothing like people; the worms have no limbs and breathe through slits in their guts. But they share approximately 14,000 genes with humans, scientists found, comprising about 70 percent of the human genome
The correct answer is: mountains.
This picture represents the continent to continent collision.
Continent-continent collisions bring on some of the world’s largest mountains ranges.
Enormous slabs of crust (or two continental plates) collide and two continents become welded together. Numerous and large earthquakes occur at this places.
The most well-known example of continent-continent collision zone is the Himalayas (India collided with Asia).
A fermentação é um processo de transformação de uma substância em outra, produzida a partir de microorganismos, tais como fungos, bactérias, ou até o próprio corpo, chamados nestes casos de fermentos.
Existem 2 tipos de fermentação: A fermentação láctica e alcoólica. Este tipo de obtenção de energia não necessita do oxigênio como aceptor final de elétrons, por isso é chamado de respiração anaeróbica. Ambos os tipos de fermentações produzem 2 ATP no final do processo por molécula de glicose.
Portanto, o processo fermentativo apresenta um rendimento energético bem inferior ao da respiração aeróbica.
