What is mass flow a level biology? This article is about the flow of fluids in biological systems. Mass flow, also known as “mass transfer” and “bulk flow”, is the movement of fluids down a pressure or temperature gradient, particularly in the life sciences. As such, mass flow is a subject of study in both fluid dynamics and biology.
What is the definition of mass flow?
Mass flow, also known as “mass transfer” and “bulk flow”, is the movement of fluids down a pressure or temperature gradient, particularly in the life sciences. As such, mass flow is a subject of study in both fluid dynamics and biology. Examples of mass flow include blood circulation and transport of water in vascular plant tissues.
What is the mass flow hypothesis?
The mass flow hypothesis states that the translocation of glucose and other sugars within the phloem is caused by a never-ending flow of water and dissolved nutrients between the source (a place where sugars are made) and sink (where sugars are utilized).
What are the four types of mass movement?
What are the types of landslide?
- Rock falls. Single and small rock falls from cliffs build up to form aprons of scree or talus, sometimes developing over long time periods. …
- Rock slope failures. This group of landslides varies greatly in features. …
- Rotational landslides. …
- Debris flows. …
- Creep. …
- Solifluction. …
- Translational slides.
What is the formula for mass flow rate?
where:
- V ˙ {\displaystyle {\dot {V}}} or Q = Volume flow rate,
- ρ = mass density of the fluid,
- v = Flow velocity of the mass elements,
- A = cross-sectional vector area /surface,
- jm = mass flux.
What is mass flow theory a level biology?
The mass flow hypothesis is a theory which attempts to explain how solutes are transported from source cells into sinks through the phloem.
What is the process of mass flow?
Mass flow is the movement of dissolved nutrients into a plant as the plant absorbs water for transpiration. The process is responsible for most transport of nitrate, sulfate, calcium and magnesium. Diffusion is the movement of nutrients to the root surface in response to a concentration gradient.
What is mass flow in transpiration?
Due to the incompressibility of water, this build up of water in the phloem causes the hydrostatic pressure to increase. This increase in hydrostatic pressure forces the phloem sap to move towards areas of lower pressure (mass flow)
What is mass flow system in plants?
Mass flow or bulk flow is the movement down a pressure gradient ( a pressure gradient in plants is observed due to variations in solute concentration) or temperature gradient of substances in bulk or in masses. Xylem and phloem in plants play a similar role as veins and arteries in animals.
How is mass flow different from diffusion?
Mass transfer is the movement of mass from one place to another. Diffusion is a form of mass transfer. The main difference between mass transfer and diffusion is that mass transfer may or may not occur across a concentration gradient whereas diffusion occurs across a concentration gradient.
Where is mass flow used?
Coriolis mass flow meters are used in many different applications in a wide variety of industries as well as in scientific applications – measuring both corrosive and clean gases and liquids. They provide high accuracy in mass flow measurement, density measurement, temperature measurement, and viscosity.
What is the mass or bulk flow system?
Mass or bulk flow is the movement of substances in bulk from source to sink as a result of pressure differences. Fluids (water, minerals, and food) are generally moved by mass flow.