In the image above the structure located at 4 is the _____.

Give the oxidation number for oxygen in the following compound: O2

 In skeletal muscle contraction the band and the zone shrink while the band remains unchanged.

Name the different protein binding targets for Ca2+ ions in smooth vs. skeletal muscle cells and describe the similarities and differences in cellular response to Ca2+ binding in the two cell types.

Kinesin-I and Myosin-II both have multiple heavy chains and light chains. What are light chains, and how do the functions of the light chains differ for Kinesin-I and Myosin-II?

Give the oxidation number for oxygen in the following compound: O2

Given the below  equation  determine the number of liters of CO2 formed at STP when 24.0 grams of C2H6 is burned in excess oxygen gas. (Show work for full credit) 2C2H6(g) + 7O2(g) -> 4CO2(g) + 6H2O(g)  

Choose the statement below that is TRUE:

Choose the statement below that is TRUE:

Which of the following compounds is a base?