How and why does an ATP solution makes the muscle fiber contract and makes it length shorter? How is it different from distilled water wherein it maintains the original length of the muscle fiber?

Which of the following statements correctly describes why white muscle fibers do not need is mini mitochondria as red muscle fibers? a) want muscle fibers use anaerobic respiration which does not occur in the mitochondria b) what muscle fibers use anaerobic respiration which requires more efficient mitochondria than aerobic respiration c) white muscle fibers get more oxygen than the red muscle fibers

What would happen to a polarized epithelial cell tissue if we added a calcium chelating agent externally?

Which answer is correct (a or b) for the question about why your hands and feet get wrinkled after staying in the bath for too long. a) the water and dissolved particles are drawn out of your skin by diffusion into the large body of water around you. b) the water is actually drawn into your skin by osmosis. explain why (a or b) is correct.

What would happen to the ability to contract muscle if there was less than a normal amount of extracellular potassium?

You start to run, and your skeletal muscles need to work harder. Which of the following is the immediate source that your muscles use to get the energy they need? A)Glycolysis B) Oxidative phosphorylation C) Creatine phosphate D)Myoglobin

You’re having a discussion with a colleague who insists that intermediate filaments, IFs, provide very little mechanical strength to cells. How can you rebut this and provide quantitative, experimental evidence to measure the strength of an intermediate filament using microscopy?