2026 Exam Questions and
Correct Answers | New Update
Atypical Cell Walls - 🧠ANSWER ✔✔-are like gram positive
-waxy lipid (mycolic acid) bound to peptidoglycan
-mycobacterium
-nocardia
, Mycoplasma - 🧠ANSWER ✔✔Wall-less bacteria, plasma membrane
contained sterols thought to protect them from lysis.
Archaea - 🧠ANSWER ✔✔Either wall-less, or the cell wall is made up of
pseudomurein (no peptidoglycan).
Acid-fast walls - 🧠ANSWER ✔✔In genus mycobacteria and nocardia, have
high concentration of mycolic acid.
functions of mycolic acid - 🧠ANSWER ✔✔involved in pathogenesis
Allows M. Tuberculosis to defy treatment
Allows pathogens to grow inside macrophages
Functions of plasma membrane - 🧠ANSWER ✔✔Allows passages of some
molecules but not others (selective permeability)
Self healing
Contains enzymes for ATP production
Some membranes have photosynthetic pigments on foldings called -
🧠ANSWER ✔✔chromatophores
Phospholipid - 🧠ANSWER ✔✔bilayer, encloses cytoplasm