Frog skeletal muscle contains thick filaments that are 2.0um long and thin filaments 3.0 um long. if the uncontracted sarcomere is 4.0 um long, and the contracted sarcomere is 3.0 um long, what is the length of the i bands in micrometers before contraction? i band before = (answer with a numer, eg 3.0)

Pls the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.