Answer:
A. Food was turned into blood, and when it reached the heart it was mixed with air to make 'spirit.'
Explanation:
Galen believed a theory of pneuma. That is, he believed that blood contains "vital spirits" released into it by the brain.
 
        
                    
             
        
        
        
Answer:
The growth factor receptors have a kinase domain while the Cytokines receptors do not contain a kinase domain as part of their structure.
Explanation:
The two are signaling molecules that control cell activities in some manners, such paracrine, endocrine and autocrine manners.
The receptor kinase domain can be specific for substrate sites in which phosphorylation occurs.
 
        
             
        
        
        
i think false because they can help with another animal and there population decrease
        
             
        
        
        
<span>Both isotonic and equilibrium share the same definition; they both carry the meaning “balance” or “equality” – but ultimately, they still have differences. An isotonic solution is a mixture of two or more substances; substances which carry the same salt concentration as the ones that surround the blood cells – while equilibrium is the state of the solution per say.</span>
 
        
             
        
        
        
Answer:
Decompose
Explanation:
If the material decomposes the stored energy will be released.