Answer:
Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane.
Explanation:
they help transport some substances through the membrane.
 
        
             
        
        
        
Answer:
Emulsions are a type of suspension, where two immiscible liquids are mixed together. Examples of suspended solutions include salt water, sand in water, and muddy water.
Explanation:
 
        
             
        
        
        
Answer:  the <span>Permian–Triassic extinction event ; {"end of the Permian era"} .
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b) cytosine pairs with guanine in both. literally in dna replication,
<em>adenine goes with thymine</em>
<em>thymine goes with adenine</em>
<em>guanine goes with cytosine</em>
<em>cytosine goes with guanine</em>
hope this helps mina! :) <3
 
        
                    
             
        
        
        
The recessive trait in the F1 plants appears in a ratio of 3:1.