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:
D. cell is the smallest part of an organism.
as cell is basic functional and structure of life.
 
        
             
        
        
        
Answer: The answer is A: The Inferior Colliculus
Explanation:
 The inferior Colliculi play a major role in hearing. Since the loud noise was what prompted the response it is safe to say the inferior Colliculi is responsible. 
 Neurons in the inferior Colliculi respond to cues such as intensity, the difference red in arrival of sound to both ears. 
 However, the head snaps up because the information from the inferior Colliculi is transmitted to the superior Colliculi which is involved with movement such as the head. 
 
        
             
        
        
        
Answer:
i need the same thing and also i like ya cut g
Explanation:
 
        
                    
             
        
        
        
D so that bacteria doesnt multiply in the grains since moisture favours them