What part of the city has a similar job to the cell membrane ?

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy

Works together in the synthesis, modification, packaging, and transport of lipids and proteins