Question

acidophilus yogurt.
which characteristic proves lactobacillus acidophilus is from the specific kingdom eubacteria?
it is multicellular.
it has a cell wall.
it is a microorganism.
it has peptidoglycan.

Explanation:

To determine the characteristic proving Lactobacillus acidophilus is from Eubacteria, we analyze each option:

• "It is multicellular": Eubacteria are unicellular, so this is incorrect.
• "It has a cell wall": Fungi and plants also have cell walls, so this is not unique to Eubacteria.
• "It is a microorganism": Many organisms (e.g., some protists, fungi) are microorganisms, so this is not specific.
• "It has peptidoglycan": Eubacteria (true bacteria) have cell walls with peptidoglycan, while Archaebacteria have different cell wall components. This is a defining feature of Eubacteria.

Answer:

D. It has peptidoglycan.