It means that two or more cells connected together. 
You can look at the word 'cell' and 'conjunctions' separately. 'Cell'  is a tiny particle. 'Conjunctions' means 'two or more things connected', so just put the two meanings together.
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<span>Thylakoid membrane.
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-Payshence xoxo
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Predation 
It can be explained in that way or also called Predatory/prey relationships. 
Parasitism is when one is benefited and the other harmed (ie leech and human)
Commensalism is when one is benefited and the other not affected (Tree frog and rainforest tree) 
Mutualism is when both are benefited (Bee eats honey and Flower is pollinated). 
        
                    
             
        
        
        
Answer:
Option D
Explanation:
Bits of DNA that are interspersed among these repeated sequences are called spacers. Regarding to bacteria, the spacers are taken from viruses that previously attacked the organism. They serve as a bank of memories, which enables bacteria to recognize the viruses and fight against future attacks.
 
        
             
        
        
        
There is not any nucleus and nuclear bound organelles in prokaryotes....