Channel proteins are a type of transport protein or permease that provides a tube like opening in the plasma membrane through which particles can diffuse through. This is primarily one distinction between the 2 mechanisms or processes of simple diffusion. Facilitated diffusion and simple or passive diffusion. The use of these specific proteins.
Expand more. Not understanding the question with what you have here.
Answer: stage of fruit ripening, characterised by a surge of respiratory activity and usually coinciding with full ripeness and flavour in the fruit.
An arid environment is characterized by hot and dry climatic conditions. Plants and animals are adapted to survive in this harsh conditions. Rainfall is minimal to intermittent.
In arid environment, the climatic weathering is very slow because of no to minimal rainfall.
Mechanical or physical weathering most common in an arid environment is THERMAL WEATHERING due to constant increase in temperature.
