Answer:
Through simple diffusion, down the concentration gradient.
Explanation:
The phospholipids of the membrane are amphipathic with hydrophillic heads and hydrophobic tails. Other polar molecules cannot go through this hydrophobic interior. Since small uncharged lipids are non polar and hydrohobic, they are able to go through the membrane without the help of transport proteins. Therefore, the last two options can be ruled out because facilitated diffusion includes the use of a protein. Diffusion involves molecules moving down the concentration gradient so the second option can be ruled out.
Answer:
sensory path take the impules towards the CNS
motor path take the impules away from CNS
Explanation:
Answer:
Although habitats provide food, water and shelter that animals need, there is more to survival than just the habitat.
Answer:
5
Explanation:
The number of protons is the same as the atomic number
