Please answer both questions down below thanks A muscle cell

Please answer both questions down below thanks.

Solution

A muscle cell is a muscle fibre -- True

muscle cell or muscle fiber or myocyte consists of actin and myosin filaments sliding past each other thereby helping in contraction of muscle which assists changes in the length and shape of these cells.

A protein that is sensitive to voltage such as the sodium voltage-gated channel will change in its shape in response to a change in voltage True.

In sodium gated channel, S4 transmembrane helix is present which is the voltage sensor. movement of these sensors under voltage change stimulates a conformational change in the protein leading to change in shape which opens the channel.