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 absent from most somatic cells. It is present in germ (germinal) cells, cancer cells and stem cells (including hematopoietic stein cells).