Find B - A A) $\left[ \begin{array} { r r } - 5 & 12 \\ - 1 & 0 \\ 9 & - 1 \end{array} \right]$

question 82

Multiple Choice

Find B - A.
- $$A = \left[ \begin{array} { r r } 2 & 6 \\4 & 4 \\2 & - 7\end{array} \right] , B = \left[ \begin{array} { r r } - 7 & 6 \\- 5 & - 4 \\7 & 6\end{array} \right]$$

• A) \(\left[ \begin{array} { r r } - 5 & 12 \\ - 1 & 0 \\ 9 & - 1 \end{array} \right]\)
• B) \(\left[ \begin{array} { r r } 9 & 0 \\ 9 & 8 \\ - 5 & - 13 \end{array} \right]\)
• C) \(\left[ \begin{array} { r r } - 9 & 0 \\ - 9 & - 8 \\ 5 & 13 \end{array} \right]\)
• D) \(\left[ \begin{array} { r r } - 7 & 12 \\ - 5 & 0 \\ 7 & - 1 \end{array} \right]\)

---

Definitions:

Plasma Membrane

The semipermeable membrane surrounding the cytoplasm of a cell, composed of a phospholipid bilayer with embedded proteins.

Concentration Differences

Variations in the amount of a particular substance within a given volume, leading to a gradient that can cause diffusion.

Sodium-Potassium Pump

A membrane-bound ATPase enzyme that pumps sodium out of cells while moving potassium into cells, crucial for maintaining cellular ion balance and membrane potential.

Plasma Membrane

A bi-layer of lipids and proteins that surrounds a cell, controlling the passage of substances in and out of the cell.