4. Which of the following statements best describes how proteins and enzymes move within a cell? The movement of proteins and enzymes within a cell is facilitated by intracellular receptors.
The movement of proteins and enzymes within a cell is facilitated by special organelles called transport receptors.
The movement of proteins and enzymes within a cell is facilitated by special organelles called magneto receptors.
The movement of proteins and enzymes within a cell is facilitated by membrane receptors.

The movement of proteins and enzymes within a cell is facilitated by intracellular receptors.

Explanation:

Proteins and enzymes (which also are proteins) move inside the cell through intracellular receptors. These receptors are proteins capable of binding other molecules such as proteins and hormones in order to transport them to different cellular locations. Thus, intracellular receptors are key players in signaling pathways that trigger signaling events to regulate a particular function, for example, activating gene expression by transporting proteins to the nucleus.

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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.