"what proteins are found in thin filaments of skeletal muscle fibers? "

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

Name three things that show evidence of evolution. write one sentence for each, explaining why it demonstrates evidence. (9 points)

Chronic obstructive pulmonary disease (copd) makes it difficult for the respiratory system to deliver oxygen to the lungs. the scientist wants to use a computer simulation to model how copd affects heart rate and respiratory rate during exercise. she will compare the results of the simulation to the results she gathered in her previous study. which of the following would be an appropriate dependent variable for the new study?