GCSE Biology - Active Transport #9

The video tutorial explains active transport, contrasting it with diffusion. Diffusion is a passive process where substances move down their concentration gradient, while active transport requires energy to move substances against the gradient. Active transport occurs across cell membranes and involves special proteins. The energy for this process comes from cellular respiration in mitochondria, stored in ATP molecules. The tutorial also discusses active transport in plants, specifically in root hair cells, which absorb water and minerals from the soil. These cells are adapted with a large surface area and numerous mitochondria to facilitate active transport.

What is the main difference between active transport and diffusion?

Describe the process of cellular respiration and its importance for active transport.

Explain how root hair cells are adapted for their role in absorbing water and minerals.

How do plants utilize active transport to absorb minerals from the soil?

What role do mitochondria play in the function of root hair cells?