Answer:
The correct option is C: antigen-binding sites
Explanation:
The antibody is shaped much like the letter Y in the English alphabet. It has two antigen binding sites that are identical in nature. The specificity of these sites is determined by the amino acid sequence that makes it up. Antibodies are complementary to these antigen binding sites, and the antibodies have an incredible ability to recognize a great variety of antigens.
Hope that answers the question, have a great day!
Answer:
lichens and bacteria also fungi are all example of pioneer species
Explanation: they are because of where they live how they grow and why they do what they do to help the environment.
2 seems like the best answer
D. all of the above because
Repair of damaged tissue.
Growth of an organism.
Replace old and dying cells.
Mitosis, since it involves the process of splitting into two daughter cells.