This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
All of the following cell types contain the enzyme telomerase which protects the length of telomeres at the end of chromosomes, except: 
Select and explain. 
A. Germinal, B. Somatic, C. Hemopoietic, D. Tumor
B: Somatic
Answer: B: Somatic 
Explanation: Telomerase is the enzyme responsible for telomere synthesis and is responsible for maintaining the length of the telomere. Telomerase enzyme is not present in somatic cells. Ref: Lippincott's Illustrated Reviews: Biochemistry, 3rd Edition, Chapter 29, Page 405