The main function of neurons is to（）
A. accept stimuli
B. transmit impulses
C. nutrition
D. protect
查看答案
The nucleus is mainly composed of（）
A. nuclear membrane
B. caryoplasm
C. nucleolus
D. chromatin
The basic structure of an animal cell, including the（）
A. cell wall
B. cell membrane
C. cytoplasm
D. nucleus
The basic function of the cell membrane is to（）
A. maintain the integrity of the cellular morphology
B. maintain the relative stability of the intracellular environment
C. cell identification
D. carry on material exchange with the external environment
（）is a translucent gelatinous substance between the cell membrane and the nucleus
A. cell wall
B. Cytoplasm
C. mitochondrion
D. endoplasmic reticulum
微信支付 
支付宝支付