Single or multi-celled structure, membrane-bound organelles, cell(s) larger than prokaryotes
A larger, biologically active protein complex is created when two or more protein subunits come together to form a quaternary structure.
A protein's quaternary structure is formed when several protein chains or subunits come together in a compact configuration. There are separate primary, secondary, and tertiary structures for each of the subunits. Hydrogen bonds and van der Waals forces between nonpolar side chains hold the subunits together.
For a quaternary structure to function as a whole, the subunits must be arranged in a particular way. Any change to the subunits' structure or how they are linked results in noticeable adjustments in biological activity.
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I believe the correct answer would be the mitochondrion
The food we eat is processed into glucose, and then converted into ATP - usable energy by the mitochondrion
The mitochondria is the powerhouse of the cell
I hope this helped!
Answer:
There are two types of defense mechanism of plants against herbivorous
1- Mechanical defense
2- Chemical defense
Explanation:
Mechanical defense is a first line defense in which plant makes barriers which is made up of wax cutical and bark and they form spines on leaves, thorns on branches which can helps in resistance and physical damage to animals.
Chemical Defense is a type in which plant produces some metabolites, toxins and chemicals which is very toxic to animals and helps in defense example alkaloids.
