Silicate tetrahedron. A siliconâoxygen tetrahedron is the Si O 4 anionic group, or a silicon atom with four surrounding oxygen atoms arranged to define the corners of a tetrahedron. This is a fundamental component of most silicates in the Earth's crust. siliconâoxygen tetrahedron is the Si O 4 anionic group, or a silicon atom with four surrounding oxygen atoms arranged to define the corners of a tetrahedron.
Best Answer: G proteins are special proteins that help plasma membrane receptors work. Many different signal molecules use G-protein linked receptors, including epinephrine and other hormones. It is part of a second messenger system. How it works is that some chemical messenger binds to the receptor at the membrane.
Hormones are signalling molecules produced by endocrine cells which convey information to target cells. When a hormone reaches a target cell, it binds to a receptor to initiate a response.inding proteins, or globulins, are transporters of lipid soluble hormones. They can be specific to a particular hormone, or non specific, having the ability to carry many types of hormone. Examples of Hormone Binding Proteins: Specific: 1  Cortisol Binding Protein. 2  Vitamin D Binding Globulin.