The h-zone completely disappears in a fully contracted sarcomere because the

myosin is pulled toward the center of the sarcomere

actin is pulled toward the center of the sarcomere

myosin moves toward the z discs

actin moves toward the z discs

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called