Answer:
The main functions of mitosis are growth and repair. Some cells once fully formed do not undergo cell division, such as nerve cells and muscle cells.
Explanation:
Since you can never re-grow or repair these types of cells once they are mature, you must take care of the ones you have.
What is the question. human sex cells have 23 unpaired chromosomes in each cell.
Answer:
The correct answers are option 2, 4 and 6
Explanation:
2-The T tubules are the extensions of the cell membrane that goes deep into the center of the middle of the skeletal and cardiac muscles and are in close contact with the sarcoplasmic reticulum.
These tubes plays 2 vital functions in connecting an action potential to muscle contraction. T tubules causes the action potential from the plasma membrane into the interior of the muscle cell through voltage-gated Na+ and K+ channels.
An action potential causes the opening and closing of Calcium channels in the sarcoplasmic reticulum. The resulting change in cytosolic Ca2+ concentration triggers contraction of the myofibrils.
The T tubules play two important roles in linking an action potential to muscle contraction.
To some degree, priorities can be defined if the stress, species, place, and time are first prioritized or defined. The stressors discussed below and<span> are highly dynamic; that is, they can quantitatively change in time and space depending on changes in human activities (including future management actions), climate, and combinations thereof.</span>
<span>proton gradient</span> establishment
Chemiosmosis is the process that allows the diffusion of a
molecule or an atom through the membrane. Also, it is the movement of ions
across semipermeable membrane down their electrochemical gradients. In chloroplast,
chemiosmotic coupling is an important factor in ATP production through proton
gradient establishment.
