Yes, the fan’s blades have kinetic energy. The blades are in motion and they do work by causing the air to move through the fan blades.
The meaning is, "the taking in of matter by a living cell by invagination of its membrane to form a vacuole."
The right answer is A.
Lactic fermentation is a catabolic process, a fermentation, having as a starting point glycolysis, which produces an acid, lactic acid used to reoxidize NADH to NAD+, and by the way it produces energy in form of ATP.
In other words, lactic acid fermentation is a biological process by which sugars such as glucose, fructose, and sucrose are converted into cellular energy and metabolic byproduct, lactate. It is a lactic ferment that intervenes.
