Answer:
cell B
Explanation:
You can see that cell B contains a chloroplast
Chloroplasts are the organelles responsable for photosynthesis, a process in which sugar is produced
The DNA region is easily accessible
Answer:
Because it's anaerobic
Explanation:
This metabolic pathway can be found in most of the organisms in the nature.
That gives us the guideline that it's one of the first in appear, even in the abstence of oxygen.
Millions of years ago, there was no presence of free oxygen in the atmosphere.
During the propagation of the excitation wave along the sarcolemma, the action potentials travel down the transverse (T) tubules. and thus stimulates the intracellular release of the calcium ions. Propagation of an action potential along the sarcolemma is the excitation portion of excitation coupling and must be coupled to the release of calcium ions for contraction.
