Answer:
Option (A).
Explanation:
The lac operon system in bacteria elucidates the process of lactose metabolism within the cell. The initial operon system was identified by Jacob and Monod. An operon is characterized as a cluster of genes transcribed together as a single RNA unit.
When both glucose and lactose are available in the media, the bacterium favors metabolizing glucose. The presence of glucose is recognized by the bacterial cell as the CAP-cAMP complex is essential for transcription, and its levels are reduced in glucose's presence. This mechanism effectively halts the transcription of lactose genes even when lactose is available.
Consequently, the right answer is option (A).
Carbon dioxide is produced during cement production as a result of burning fossil fuels.
<span>An organism with a head containing sensory features and a brain likely possesses receptors that gather environmental stimuli, converting them into nervous impulses, in addition to sensory organs that serve as our means of communication with the surroundings. These senses include sight, hearing, smell, taste, and touch, allowing us to comprehend and interpret our environment.</span>
Respuesta:
La opción D
Explicación:
La córnea es uno de los tejidos más sensibles del cuerpo, ya que está densamente inervada con fibras nerviosas sensoriales a través de la división oftálmica del nervio trigémino mediante 70–80 nervios ciliares largos. Por lo tanto, la respuesta sería la opción D.
