The portion of the membrane system in eukaryotic cells that is responsible for the making of lipids and breaking down toxic substances is the

The portion of the membrane system in eukaryotic cells that is responsible for the making of lipids and breaking down toxic substances is the smooth ER (endoplasmic reticulum). Other functions of smooth ER include storage of calcium ions (in muscle cells).

Explanation:

This should be distinguished from the role of rough ER (endoplasmic reticulum), which is the synthesis of membranes and secretory proteins.

the correct answer is:

a population changes in response to a change in the environment.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.