When a membrane is at rest, what attracts sodium ions to the inside of the cell?
a. an electrical gradient
b. a concentration gradient
c. both an electrical gradient and a concentration gradient
d. neither an electrical gradient nor a concentration gradient
c
Psychology
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A component of the nonspecific immune system that prevents microbes from getting into the body is called a(n) ______________barrier
A) anatomical B) protective C) membrane D) microbe
Psychology
Which of the following is NOT a category of play, according to Parten?
a. Parallel b. Solitary c. Indiscriminate d. Cooperative
Psychology