Answer:
Explanation:
Muscle contraction is stimulated by the movement of an action potential moving along a nerve fiber to the muscles. This event follow some series of process before being stimulated.
1. The impulse arrives at the synapse and travels through the transverse tubules.
2. The muscle impulse reaches the sarcoplasmic reticulum and calcium is released.
3. Calcium floods the sarcoplasm and binds to troponin molecules leaving active sites.
4. Tropomyosin molecules bind to exposed active sites, linking actin and myosin.
5. Thin filaments are pulled over the thick filaments.
6. The muscle fiber shortens and contracts.
It has to be energy because there’s no internal emotion dealing with footprints. Foot prints are there to guide the investigator, energy can’t lead a investigator.
Answer:
C is the best answer
Explanation:
the dominate trait is in 3 of the four boxes
Answer:
7 pea plant traits that mendel had to study
When plates divide or separate it creates a divergent boundary.
