The cardiovascular system transports oxygen and nutrients to the cells and transports waste away from the cells
        
             
        
        
        
ANSWER
mRNA - formed from the DNA gene sequence with the help of RNA polymerase. 
EXPLANATION 
mRNA contain codons which are complement to 
tRNA anticodons.
rRNA formed in nucleolus.
tRNA carries the amino acid.
 
        
             
        
        
        
The answer is:  [B]:  "Very low levels of telomerase."
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<span>     The cancer cell line is therefore likely to express <u>  very low levels of telomerase </u><u /> .
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Answer: 
Explanation: minutes 60 
Temperature (°C) D) 32 °C
 
        
             
        
        
        
Answer:
c, both x and y chromosomes
Explanation:
different genders