Answer:
The producers play main role in the food chain and food web as well. These organism make food by the help of the process known as photosynthesis.
Only producers have the ability to make food by trapping sunlight. All the living source needs energy to survive.
The source of food is producers so living things cannot survive without food. So there producers are considered as the main component of food chains and food web.
hence, they play a very vital role in the environment.
Answer:
In cells, some molecules can move down their concentration gradients by crossing the lipid portion of the membrane directly, while others must pass through membrane proteins in a process called facilitated diffusion.
Explanation:
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A. soil
a. stimulus
b.carbon
b. as a single cell
Answer:
Most people with a single kidney live a normal life without developing any long- or short-term problems. However, the risk of developing mild high blood pressure, fluid retention, and proteinuria is slightly higher if you have one kidney instead of two.
The experiment by Peter Agre who discovered the protein Aquaporin demonstrated the function of proteins that allow facilitated diffusion of water.
Explanation:
Aquaporins are water channel proteins that facilitated diffusion of water. Agre was able to prove its function when a frog’s oocytes showed increased water permeability when an unknown protein (membranous) from the RBCs was introduced into them. The oocytes without proteins did not facilitate water diffusion.
Aquaporins are membranous proteins that belong to larger intrinsic proteins but act as pores on the cellular membranes to facilitate water diffusion.
