[问答题]
Below is a diagram ofcp-8eb m-uo- /gt4h+*i) mgxp*xb ksm a motorqk-p 3wll*:4 e d0meoq neuron. Neurons are the longest cells in the human body :lk m0qle4pd-o* 3qwe.
1.Explain the factors that limit cell size in humans.
2.Explain how life functions are performed by Paramecium.
