The main reason is because they are heavy, and because they don't have to chase their food. They're not predators and their shells give them protection like running away gives protection to other herbivores.
Antibodies, a small amount of the germ
Answer: B. They are located and bind the steroids in the cytoplasm
Explanation: Steroid hormones are a class of organic compounds, typically lipids. They bind to protein receptors in the cytoplasm or nucleus of the target cell and thus, their receptors are located inside target cells where they function as ligand-dependent transcription factors. This is to say that hormone-receptor complex formed on binding to DNA activates specific genes that increases production of proteins.
Answer: C. elegans is transparent and has only about 1000 cells, allowing the cells to be followed during development
Explanation:
Caenorhabditis elegans is transparent, thus the behavior of each cell can be studied throughout its development period.