The movement of water across a semi permeable membrane is affected by the amount of substances dissolved in it.

Membranes are made of organic molecules like proteins and lipids

Molecules soluble in organic solvents can easily pass through the membrane.

Plasma membranes contain chitin sugar in plants.

Nucleus

Chromosomes

Lysosomes

Mitochondria

sets objects in motion

causes changes in motion

is the result of a net force

is directly proportional to the mass of the object