Reliable companies?? Is there answer choices?
Answer: hydrogen molecules.
Explanation: in same temperature molecules have same average kinetic energy.
You can estimate it solving E = 3/2 kT = 1/2 mv². Constant k is Boltzmann constant.
Lighter molecule has greater speed
A. All four are protist membranes
b. Two are from the engulfed photosynthetic bacterium; one is a protist membrane; the other is from the food vacuole produced by the protist originally containing the bacterium.
c. Four membranes evolved from the protist's cell membrane.
d. All four are bacterial membranes.
e. One is from the bacterium; one is from the protist; one is from the bacterial nuclear membrane; one is from a food vacuole.