Cells are the smallest unit of life. Cells in multicellular plants and animals are arranged into tissues, organs and organ systems. Cells. Tissues. Organs. Organ systems. And the organism itself.

such as that between plants and animals, allow us to highlight the most fundamental principles of stem cell biology. Stem cells function as the source of new cells to build tissues and organs and ...

Medically reviewed by Sohaib Imtiaz, MD Choosing between animal and plant protein sources depends on several factors, ...

Discover the astonishing world of plants that mimic animal behavior ... between different stimuli mirrors the sensory system of animals.

Cells are the smallest unit of life. Cells in multicellular plants and animals are arranged into tissues, organs and organ systems. Cells. Tissues. Organs. Organ systems. And the organism itself.