It describes the mechanism of ascent of sap by the theories of root pressure and transpirational pull. It explains the cohesion-tension-transpiration pull model of water transport.

Learn about transportation! This is a great video for kids to learn about different ways to travel. Each one of these methods of transportation are fun, unique, and interesting. Children will love the real video footage...

Paul Andersen describes how cells move materials across the cell membrane. All movement can be classified as passive or active. Passive transport, like diffusion, requires no energy as particles move along their gradient. Active...

In this video, the concept of transport of substances into and out of cells is explained. The different ways in which this process occurs are discussed, including diffusion, osmosis, and active transport. The importance of surface area...

How does a tall tree draw water from its roots to its leaves? And how does food made in leaves reach the rest of a plant? Discover how plants transport resources via the xylem and phloem. Biology - Plants - Learning Points. Transpiration...

In this video, the teacher explains how plants transport water and food to all parts of their body without a circulatory system. They introduce the specialized tissue called vascular tissue, which is made up of xylem and phloem, and...

Describes the mechanism of transport of water and minerals in plants. Explain movement of food from leaves to other plant parts.

We place two privet hedge shoots under different conditions to see how the amount of water they draw up will change. They are both placed in measuring cylinders with the same amount of water and a layer of oil is added to the top to...

Freshwater seems abundant, but when accounting for all the water on Earth, it's in limited supply. Just three percent of the water on our planet is freshwater. A majority of this water, about two percent of the world total, is...

University of South Florida engineering professor Norma Alcantar and her team are using the ""flesh"" from Prickly Pear cacti, called mucilage, to clean up oil and other toxins from water. With support from the National Science...

The cycle of water from the air to the ground to the oceans and back to the air never ends. Water is found in the air, in the ground, in rivers and oceans, and it's found as gas, liquid, and solid. As it moves though phases and locations...

The cycle of water from the air to the ground to the oceans and back to the air never ends. Water is found in the air, in the ground, in rivers and oceans, and it's found as gas, liquid, and solid. As it moves though phases and locations...

The nugget explains the uptake, absorption and transport of mineral nutrients in plants.

This program explores the role of water erosion from its initial impact to deposition. Students will come to understand that starting with impact of raindrops, water erodes the landscape by transporting rock and soil. By watching this...

Sugars move up and down the plant in the phloem. The phloem uses active transport to transport the food nutrients like glucose and amino acids around the plant. Glucose is made in the leaves by photosynthesis. Glucose is converted into...

Water. It's an essential building block of life, constantly moving in a hydrologic cycle that flows in a continuous loop above, across and even below the Earth's surface. But water is also constantly moving through another cycle --...

Transpiration is the evaporation of water from the aerial parts of a plant (so the leaves and stems). By water evaporating out of these parts - mostly the leaves, a suction pressure is created which draws water up through the plant. This...

Learn the names for transports through music and images!

Discover the different means of transport that and live an authentic adventure!

The Electron Transport Chain: Complex IV

The trilogy is finally concluded! And with a bang, no less, as this final stage of cellular respiration is the one that provides the big energy payoff for the cell. Let's learn about how the products of the Citric Acid cycle go on to the...

In this video, we explore how NADH and FADH2 feed into and power the electron transport chain (respiratory chain) which is coupled with ATP synthesis.

Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot...

Hank describes how cells regulate their contents and communicate with one another via mechanisms within the cell membrane.