Answer:
D. Porine
Explanation:
Mitochondria are double membrane-bound cell organelles. The outer and inner mitochondrial membranes are quite distinct from each other with respect to their structures and functions. The outer mitochondrial membrane is permeable to small molecules and ions. Permeability of the outer mitochondria membrane is mainly due to the presence of integral membrane protein porins which make transmembrane channels to allow the free movement of these substances across the outer membrane.
On the other hand, the inner membrane is quite impermeable to most small molecules and ions including protons as it does not have porins. A substance can cross the inner membrane only through specific transporters. The inner membrane has the components electron transport chain and the ATP synthase.
Answer:
Option D: All of the above, is the correct option
Explanation:
The Ocean Dumping act or the Marine Protection, Research and Sanctuaries Act, regulated by EPA; prohibits the dumping of any material into the ocean which can degrade or negatively effect the marine environment and human life, in any manner.
Some examples of the materials that can not be dumped into the ocean under this act are- industrial waste, sewage sludge, radioactive substances and medical wastes.
Therefore, all of the above mentioned materials can not be dumped into the ocean.
Answer:
Nitrogen is a constituent element and is part of many compounds in plants.
Explanation:
Nitrogen is a building block and there is no process in plants that is not affected by nitrogen.
If there is not enough nitrogen in the soil, the growth decreases, the leaves are yellow, pale green, chlorosis occurs, the root is removed, its branching is reduced, the yield and quality of fruits are reduced.
