What replaces peptidoglycan in the cell wall of Archaebacteria? an S-layer
organelles
DNA
amino acids

Which of the following shows the results that you would get if you tested beef using the four tests in the gizmo

Why can cancer in the lymph nodes (lymphoma) be particularly dangerous? a. the lymph node's ability to produce cancer-fighting lymphocytes would be compromised. b. the lymph node's ability to produce cancer-fighting lymph would be compromised. c. the lymph nodes produce lymph, which nourishes growing cancer cells. d. the lymph nodes produce chyle, which nourishes growing cancer cells.

Which pair of chromosomes determines sex in humans? a.15th b.1st c.23rd