Answer:
Hydrogen ion
Explanation:
The proton gradient created by the electron transport chain provides a H+ to power ATP synthase.
Answer
Frequency of stimulus can change the force of muscle twitch.
Explanation
Twitch is tension produced by the contraction of a small muscle or it is muscle fasciculation. Its strength depends on the stimulation frequency. If the frequency is higher then temporal summation takes place and produce higher tension in the muscle. If the frequency is weak then less tension is produced in the muscle. This force also depends on the cross-sectional area of muscle.
I would say that this child may need iodine drops as it may be deficient in this or perhaps a synthroid type medication. Also, it may be wise for such a child to run on a treadmill about 3x per week as this raises the metabolic rate since it is cardiovascular activity.
Rough Endoplasmic Reticulum. it has a rough surface and is covered in ribosomes.
