Answer:
Biogeochemical cycles and the rock cycle allow nutrients to be recycled through the abiotic and biotic zones of Earth. They are responsible for the cycling of oxygen, carbon dioxide, phosphorus and nitrogen between the biosphere and the rest of Earth. Hope this helped!
Explanation:
<u>Answer</u>:- A material is considered biodegradable if it can be broken down by biological processes.
<u>Explanation</u>:-
1. There are many living organisms such as bacteria, fungi and other microbes that feed on organic matter and convert them into simpler forms.
2. Due to the enzymes released by such microbes, all the materials such as food refuse, tree leaves, grasses etc. are considered to be <em>biodegradable </em>as they are capable of being broken down by them.
3. The materials that cannot be broken down by such living organisms are considered to be <em>non biodegradable</em>.
4. The non biodegradable substance produce a problem in the environment as they persist for a long period of time and also form a major source of pollution for soil and water. Further, they may also cause harm to other living organisms present in the environment.
5. Example of a non biodegradable substance is plastic.
Answer:
Chemical inhibitors likely bind to receptors and interfere with receptor activation or signal-receptor binding.
Explanation:
The signaling pathway requires the generation of a signal, its reception by target cells, signal transduction and cellular response. According to the given information, the inhibitors are the large and non-polar molecules. The cell membranes do not allow free passage of large molecules. Therefore, these inhibitors are most likely to interfere with signal reception by target cells.
For the purpose, the inhibitors may bind to the receptors present on the surface of target cells and thereby, not allowing the binding of the signaling molecule to the receptors and the activation of the receptors. Unless the signaling molecule binds to its receptors present on the surface of target cells, receptors remain inactive and there is no signal transduction.