Specialised cells

Introduction to Cell Differentiation00:00:00

Life begins as a single zygote that divides through mitosis. These cells undergo differentiation, developing specific shapes, structures, and organelles to perform specialized roles in the body.

Human Reproductive Cells00:01:06

Sperm cells are adapted with a flagellum for movement, mitochondria for energy, and an acrosome for fertilization. Egg cells contain cytoplasm rich in yolk to support early embryo development.

Functional Adaptations in Human Cells00:02:18

Red blood cells lack a nucleus to maximize hemoglobin storage for oxygen transport. Nerve cells possess long fibers for electrical signaling, and ciliated cells use cilia to clear mucus from respiratory tracts.

Specialized Plant Cells00:03:25

Palisade mesophyll cells are packed with chloroplasts for photosynthesis, while root hair cells feature large surface areas to efficiently absorb water and minerals from the soil.

The Role of Stem Cells00:04:01

Both plant and animal specialized cells originate from stem cells, which are unspecialized cells capable of repeated division and differentiation into various cell types.