Which Ion(s) Have a Net Electrical Force Acting to Move

question 130

Multiple Choice

Which ion(s) have a net electrical force acting to move the ion(s) into the cell? (Assume a resting membrane potential (V_m) of -70mV.)

• A) X⁺, whose [ECF] is 120 mM and [ICF] is 30 mM
• B) A ^-, whose [ECF] is 100 mM and [ICF] is 100 mM
• C) B ^-, whose [ECF] is 140 mM and [ICF] is 30 mM
• D) both X⁺ and B ^-ions
• E) X⁺, A ^-, and B ^-ions

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Definitions:

Blastocyst

An early stage of embryonic development, characterized by a spherical shape and consisting of an inner cell mass and an outer layer of cells.

Uterine Cavity

is the internal space of the uterus where a fetus develops during pregnancy.

Implanting

The process of surgically inserting or grafting an object or material into the body.

Zygote

The initial cell formed when a sperm cell fertilizes an egg cell, which then undergoes cell division to develop into an embryo.