Simple Diffusion Across the Cell (Plasma) Membrane. The structure of the lipid bi-layer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Answer:
the definition of migration is option B
Answer:
Homeostasis is controlled by the nervous and endocrine system in mammals
Explanation:
Nervous system when you touch a hot pan the nervouse system sends a message to move or feel pain
Endocrine system releases hormones into the bloodstrram that helps our growth and development,helps our organs work metabolism,and reproduction
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Answer:
can you shoot it better because it is quite blurry
