Answer:
Proxima Centauri is 4.243 light years away
Explanation:
Red blood cells exchange carbon dioxide for oxygen
The largest mammal in the world would be
a Blue Whale... Hope this helps! :)
Answer:
Smooth muscle tissue
Explanation:
In the diagram it can show you. It is the one in the middle!
Hope this helped!
Answer:
Secondary level of protein structure
Explanation:
The proteins are formed of the monomer units called amino acids which bond with each other via peptide bond and form a linear peptide structure called the primary level structure of the protein.
The proteins to perform several functions in a cell undergoes structural conformation and attain the helical form called alpha helix due to the involvement of alpha carbon in bond formation and a pleated sheet called beta-pleated sheet due to the involvement of beta carbon. These structures are known as a secondary level of protein structure.
Thus, a Secondary level of protein structure is the correct answer.