Milk is a colloid with small particles of butterfat suspended through the liquid.

False, as momentum = Mass x Velocity So, it depends both mass and velocity of the body.

When resultant force acting on a body is zero, then body will be in equilibrium.

Presence of lipids and proteins as phospholipids provide flexibility plasma membrane. This helps cell in engulfing food and other materials from external environment.

Plasma membrane or cell membrane is the outermost covering of the cell that separates the content of the cell from its external environment.