Herbivores have flat teeth because that helps them chew plants easier.
Omnivores have both sharp and flat teeth because they eat both meat and plants, so they need both types
The function of a cell membrane is to protect the structures within the cell, give shape to the cell and support its structure.
Z is a letter, 8 is a number
As hinted in the question, the cross bridge cycle is a
series of molecular events that occur after excitation of the sarcolemma. A
cross bridge is formed when a myosin head bound to actin. The cross bridge
cycle depends on the presence of calcium ions