What does gene expression control? a. the proteins that are made by the cell
b. the rate at which DNA replication occurs
c. the duration between cell cycles
d. the division of the cell nucleus

a

Explanation:

Control of gene expression ,

1)Transcriptional control : controls when and how often the gene is being transcribed.

2)Post-transcriptional control :

- RNA process control determines how often RNA is been processed.

- RNA transport and location control : selection of mRNA to be transported to  

   cytosol.

- mRNA degeneration control ; selection of which mRNA is getting         destabilized.

3)Translational control ; section of which mRNA is being translated.

4) Protein activity control / post-translational control ; regulation of proteins by activation , deactivation, degeneration, compartmentalization and modification of protein.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

c. establishing proper sleep hygiene