The central sleep apnea is a condition, in which the person rapidly stops and starts breathing during the sleep.
The condition of the central sleep apnea is due to the change in the signaling pattern during the time of sleep. During this process, the respiratory centers present in the brain do not respond well and sometimes do not send signals to the muscle responsible for respiration.
Hence, the given blank can be filled with central sleep apnea.
D) Amount of precipitation
Explanation:
I'll try to help what is the question
The extracellular glucose inhibit transcription of the lac operon (D) by reducing the levels of intracellular cAMP.
Lac operon is the assembly of various genes that are involved in the uptake and metabolism of lactose of E. coli or any other bacteria. It consists of a regulator gene, promoter gene, operator and structural gene. Structural genes are three: z, y and a. Each codes for a different enzyme.
cAMP is the cyclic Adenosine Monophosphate. It is produced by the bacteria when there are low levels of glucose in it. Hence it is also named as hunger signals. Therefore, cAMP is responsible for activating the operon to produce lactose.
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