Describe the Changes in the External and Internal Appearance in These

Essay

Describe the changes in the external and internal appearance in these two muffins, one beaten ten strokes and one beaten 80 strokes. Then tell why this change occurred.
$\begin{array}{llcc}\underline{ \text { EXTERNAL APPEARANCE }} & \underline{ \text {INTERNAL APPEARANCE} } \\\\ \text { 10 strokes rough, pebbled top, slightly rounded } & \text { medium size cells and cell walls }\\ \text {80 strokes peaked, rounded, smooth top } & \text { tunnels, large cells } \\\end{array}$

Why did the above changes occur?