Question

what is RER ?

explain​

Answer 1

Answer:

Respiratory Exchange Ratio (RER) is the ratio between the volume of CO2 being produced by the body and the amount of O2 being consumed. This value of this ratio gives us an indication as to whether the body is operating aerobically or anaerobically.

Explanation:

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Answer 2

Answer:

Rough endoplasmic reticulum .

it has ribosomes on its surface that why it is rough.

Explanation:

Endoplasmic reticulum is a network of membranes inside a cell through which proteins and other molecules move. Proteins are assembled at organelles called ribosomes. When proteins are destined to be part of the cell membrane or exported from the cell, the ribosomes assembling them attach to the endoplasmic reticulum, giving it a rough appearance.