Answer:
Chromosome structure consists of a long arm region and a short arm region connected at a central region known as a centromere. The ends of a chromosome are called telomeres. Duplicated or replicated chromosomes have the familiar X-shape and are composed of identical sister chromatids.
Explanation:
 
        
             
        
        
        
I think it’s C an increase in producer population
        
             
        
        
        
That is the vacuole. They usually fill up with food, water, or other various wastes. 
        
             
        
        
        
Answer:
False 
Explanation:
In eukaryotes apart from RNA polymerase, the transcription of genes requires many different proteins called transcription factors. These transcription factors are important to initiate and regulate transcription.
There are two types of transcription factors regulatory and basal transcription factors. Basal transcription factors regulate transcription by binding to a gene promoter and regulatory transcription factor regulates transcription by binding to some regulatory sequences for example enhancers and silencers.  
Therefore only basal transcription factor binds to the promoter for regulating transcription. Therefore the statement is false.
 
        
             
        
        
        
The action of compressing or being compressed.
the reduction in volume (causing an increase in pressure) of the fuel mixture in an internal combustion engine before ignition.