Answer:
ATP
Explanation:
ATP is essential for both contraction and relaxation of muscles, with calcium being the main factor for the affinity between actin and myosin, in order to reach the sarcomere shortening phase.
The function of ATP is to release energy for the occurrence of movement, in addition to other actions. While there is calcium bound to troponin, there is cross-bridge(projections of actin filaments) cycling and muscle contraction.
Thus, ATP has three main functions in muscle contraction:
Providing energy to shorten the sarcomere, enabling actomyosinic shutdown by physical-chemical interaction to the thick filament and supporting the calcium pump, which ends the cycling of the cross bridges.
In Eukaryotic Cells, DNA is found in the Nucleus however since Prokaryotic Cells do not have nucleus, DNA is found in the Cytoplasm.
Summary:
- Eukaryotic Cells : Nucleus
- Prokaryotic Cells : Cytoplasm
Answer:
It allows passage of particles into and out of the cell
Explanation:
Cell membrane has proteins that help particles go in out of the cell. This type of passive transport is called facilitated diffusion.
Answer:
both contain genetic information
Answer:
The idea of concentrations and gradients within them is important when understanding the movement of substances across cell membranes. The more particles there are in a certain volume, the more concentrated those particles are. A solution with a low solute concentration has a high water concentration, and a high water potential.