The possible answers are:
A. Variation in length of the amino acid backbone
B. Each protein is encoded by a distinct gene
C. Variations in the type of peptide bond
D. Variations in the glycosidic linkage
E. Variation in tertiary structure
<span>F. Variations in which amino acids are used
The correct answers are A,E and F
There are only 20 amino acids that make all of the proteins in our bodies. However, there are options for protein variation are almost unlimited.
Firstly, you can vary the number of different amino acid that you use to make a protein.
Secondly, you can also vary the length of the amino acid chain.
And thirdly, when an amino acid chain is formed different parts of the chain interact with each other, bonding chemically, forming different 3-dimensional structures of the protein.
All of this contributes to the vast variation in proteins.</span>
A landform is a natural feature of the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Typical landforms include hills, mountains, plateaus, canyons, and valleys, ... Oceans and continents exemplify the highest-order landforms.
<span>De obicei, o colonie de miere de albine este format din trei tipuri de albine adulte, muncitori, drone și regina. Câteva mii de albine colaborează în construirea de cuiburi, colectarea de alimente și creșterea tinere. Fiecare grup de albine are propriile sale sarcini specifice pentru a finaliza, în ceea ce privește vârsta lor.
Sper ca asta ajuta! :)</span>
Explanation:
science is the practical and intellectual activity encompassing the systematic studying of the behaviour and structures of the physical and natural world
