How are genes and proteins similar to homologous structures when determining evolutionary relationships among species?

Why do bacteria thrive even in hostile environments

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament