Type of active transport that muscle cells contract

Type of active transport that helps muscle cells contract is the sodium - potassium pump. This pump involves the process of transferring sodium ions and potassium ions across a cell membrane through active transport type of diffusion. It is a process which needs an input of energy for it to proceed. For this process, it takes it energy fro the hydrolysis of ATP. It makes use of the enzyme Na+/K+-ATPase for this process. This active transport is mainly responsible of  the regulation of Na+ outside a cell and K+ ions inside the cell. The unbalanced charge present would contributr to the separation of the charges through the cell membrane.

Generally travels west to east but often shifts to north and south

Homologous chromosomes with heterozygous alleles d) heterozygous chromosomes with homozygous alleles