How do sarcomeres differ between contracted and relaxed muscles? The H-zone shortens in contracted muscles.
Relaxed muscles have a thin myosin filament.
The I-band shortens in relaxed muscles.
The A-band shortens in relaxed muscles.

Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.