Question

2. When a cell is at rest:
A. enough negatively charged sodium ions are kept outside
of the cell to maintain a slightly positive charge inside.
B. there is an equal balance of positive and negative
charges inside and outside the cell, so it is unable to fire
quickly.
C. there is an equal balance of positive and negative
charges inside and outside the cell, so it is able to fire
quickly.
OD. enough positively charged sodium ions are kept outside
of the cell to maintain a slightly negative charge inside.
O

Answer 1

When a cell is "at rest" it is in a state called the resting potential. In this state, neurons are more negatively charged ions inside the cell than outside the cell.

Answer 2

When a cell is at rest: D. enough positively charged sodium ions are kept outside  of the cell to maintain a slightly negative charge inside.

A cell refers to the fundamental or basic functional, structural and smallest unit of life that is found in all living organisms.  

Basically, all living organisms are broadly grouped into two (2) main categories based on their cell type and these include;

• Unicellular organisms: these are living organisms that possess a single cell.

• Multicellular organisms: these refers to all living organisms that have many (multiple) cells.

A cell is said to be at rest when when there is a voltage across its membrane. The value of the resting membrane potential usually varies with respect to the type of cell.

Generally, a good amount (enough) of positively charged sodium ions are typically kept outside  of the cell in order to maintain a slightly negative charge inside in the cell when it is at rest.

In conclusion, enough positively charged sodium ions are kept outside  of the cell to create a balance or an equilibrium of negative charge inside in the cell when it is at rest.

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