Bell work. Sandworms are annelid worms that live on the seafloor. They absorb oxygen and excrete wastes through their skin. Which characteristic will best help the worm carry out these functions? large number of hearts large diameter blood vessels large mouth compared to body volume
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Sandworms are annelid worms that live on the
seafloor. They absorb oxygen and excrete wastes
through their skin. Which characteristic will best
help the worm carry out these functions?
The two main functions of the cell membrane are: 1) to regulate what enters and leaves the cell and 2) to provide protection and support.
Bi- means 2
Also called the phospholipidbilayer
Carbohydrates are attached to many proteins embedded on the outside of the bilayer.The carbohydrates allow individual cells to identify one another.
A concentration gradient is a difference between two concentrations.Diffusion is the movement of particles down the concentration gradient.
When the concentration of a solute is the same throughout a system, the system has reached equilibrium.When equilibrium is reached, particles do continue to move across the membrane.
If a substance is able to diffuse across a membrane, the membrane is said to be permeable to it.If a substance cannot diffuse across a membrane, the membrane is said to be impermeable to it.
Remember: SALT SUCKS
Water: High (outside cell)
Water: Low (outside cell)