What is the Relationship between the Structure and the Function of contractile proteins?
give a simplified answer pls!

contractile proteins function

Contractile proteins are proteins that mediate sliding of contractile fibres (contraction) of a cell's cytoskeleton, and of cardiac and skeletal muscle.

Contractile tissues - muscles, tendons, and attachments. Non-contractile (inert) tissues - joint capsules, ligaments, nerves and their sheaths, bursae, and cartilages.

Explanation:

Actin and myosin are the contractile proteins present in muscles, which bring about the contraction and relaxation of muscles.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.