Aresearch laboratory uses a cancer cell line that has undergone thousands of cell cycle divisions in the laboratory without any change in the length of its chromosomes. the cancer cell line is therefore likely to express high levels of rna polymerase. very low levels of telomerase. high levels of telomerase. dna polymerases with high fidelity. high levels of ligase activity.

Explain the process that creates the heat of the sun?

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.