Answer:
Sterol lipids are common in human cell plasma membranes
Explanation:
Human plasma cell membrane contains sterol lipids and proteins which serves as structural maintainers of the cell.
It makes a longitudinal wave because it stretches and compresses while it slithers forward
<span>There are many indicators for predator presence. Some of them are:
Being able to spot predator marks like scratches or fur.
Being able to feel predator movements.
</span><span>Echo-location </span>For example, moths respond to the echo-location calls from their bat predators; moths drop to the ground once they hear the sound pulse from the bat.
