2.6 million years ago. I hope that helps!
The function of a protein is determined by its shape. Proteins are composed of polypeptides in which a sequence of amino acids connected through peptide bonds. This sequence is referred to as a proteins primary structure. The shape of each protein molecule determines its function in a cell.
I don't know if this will help but I hope it dose.
The nervous system has two major divisions: central and peripheral. But the peripheral nervous system is further subdivided into the somatic and autonomic nervous system, and the autonomic nervous system is also divided into sympathetic and parasympathetic fibers. The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain and spinal cord and the rest of the body.somatic nervous system (SoNS) is the part of the peripheral nervous system associated with the voluntary control of body movements through the skeletal muscles and mediation of involuntary reflex arcs. ... The ANS can be subdivided into the parasympathetic nervous system (PSNS) and the sympathetic nervous system (SNS).
The LYMPHATIC SYSTEM also helps defend the body against germs (viruses, bacteria, and fungi) that can cause illnesses. Those germs are filtered out in the lymph nodes, small clumps of tissue along the network of lymph vessels. Inside the lymph nodes, lymphocytes called T-cells and B-cells help the body fight infection.
Is this a question or a statement?
