Explain how the structure of skeletal muscles contribute to their function. Discuss the process of excitation/contraction and how the organization at the tissue, cell, and molecular level aid that process. Make sure to explain the sliding filament theory and neuromuscular junction.

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite