Answer:
The correct option is E) Contraction still occurs because Ca2+ can enter the cell directly through Ca2+ channels in the plasma membrane and bind to calmodulin.
Usually, the calcium ions are released from the sarcoplasmic reticulum of a cell during a muscle contraction, but if those are blocked, the contractions is an cell can still arise through the calcium ions which are present in the cell membrane of a cell.
I would go with C) food because food gives us energy, healthy veggies gives us energy and unhealthy junk food really doesn't give us as much energy and makes us fat. Not air because air is the need for life, not energy and not a place to live since that really doesn't give us energy.
Answer:
Partially correct
Explanation:
The statement is partially correct not all the materials needed for growth comes from the soil. For example carbon dioxide comes from air. The experiment that can be use is to get a pot of soil and weigh before planting on it, weigh it again after the plant has grown to a certain stage; The plant will weigh more than the difference in the weight of soil demonstrating that all the materials did not come from the soil.
I believe that the answer to this question is energy!! because cells need energy and the reason they respire is for energy
