Answer:
According to the U.S. Energy Information Administration, most of the nation's electricity is generated by coal, natural gas, and nuclear energy. Electricity is also produced from renewable sources such as hydropower, biomass, wind, geothermal, and solar power.
Answer:
The correct answer is option D. "whether the muscle moved the skeleton, the heart, or another type of internal organ".
Explanation:
It is possible to determine whether a sample of muscle tissue moved the skeleton, the heart, or another type of internal organ by analyzing its cellular structure and organization. For instance cardiac muscle is striated and organized into sarcomeres, while smooth muscle that is located in organs such as intestines, uterus and stomach are not organized into sarcomeres.
A protein domain is a conserved part of a given protein sequence and (tertiary) structure that can evolve, function, and exist independently of the rest of the protein chain. Each domain<span> forms a compact three-dimensional structure and often can be independently stable and folded.
On the other hand, a motif is a </span>distinctive sequence<span> on a protein or DNA, having a three-dimensional structure that allows binding interactions to occur. Early on, clustering was used to detect common three-dimensional structural motifs in </span>proteins<span>.
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