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Answer:
Mitochondrial proteins enter the organelle through channels formed by membrane proteins present in its inner and outer membranes.
Explanation:
All the biological membranes have lipid bilayer with the non-polar core that does not allow entry of charged and large substances. Mitochondrial proteins are synthesized in the cytosol and the unfolded proteins bind to the chaperons that deliver them to the receptors present in the outer mitochondrial membrane.
The receptor moves the protein to the membrane channels formed by integral membrane proteins of inner and outer mitochondrial membranes. The proteins enter the intermembrane space and are targeted to the inner membrane through channels while chaperons are left outside only.
2, they line up to form a polypeptide chain this forms part of a protein molecule.
Covalent bonds are formed when two atoms are able to <em>share</em> electrons.
Iroinic bonds are form when two atoms are <em> </em> electrons from each other to complete the bond. This results in a pair of ions.
<u>Covalent bonds:</u>
- Have a definite shape.
- Have a low melting point.
- At room temperature they are in a liquid or gas.
- They occur between two non-metals.
<u>Ionic bonds:</u>
- Have no definite shape.
- Have a high melting point.
- At room temperature they are solid.
- They occur between a metal and a nonmetal.
Answer:
d. All of the above
Explanation:
Wildfires are useful in controlling the ecosystem disturbed due to some diseases and insects.
With the help of wildfire, there will be a temporary loss in some region but it will lead to extraordinary growth.
Wildfire improves the soil quality by decomposing the organic material and renewing the soil nutrients.
There are chances of habitat loss but it will increase the production of food grazers.
Certain plants can be reproduced through wildfire due to cracking their seeds.