I think it's A
the cell membrane contain protein molecules
Answer:
D
Explanation:
Additional classes of steroids include:
Neurosteroids such as DHEA and allopregnanolone
Aminosteroid neuromuscular blocking agents such as pancuronium bromide
Both chordates and invertebrates have pharyngeal pouches
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
The distance of Earth from the Sun is 94.5 million miles.
A light year is 6 trillion miles so it would be less.*
