Figure 31.1 below depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 meters below the soil surface. Responses may be used once, more than once, or not at all.

-If Penicillium typically secretes penicillin without disturbing the lichen relationship in which it is engaged, then what must have been True about its partner?

Question

Figure 31.1 below depicts the outline of a large fairy ring that has appeared overnight in an open meadow, as viewed from above. The fairy ring represents the furthest advance of this mycelium through the soil. Locations A-D are all 0.5 meters below the soil surface. Responses may be used once, more than once, or not at all.

-If Penicillium typically secretes penicillin without disturbing the lichen relationship in which it is engaged, then what must have been True about its partner?

Quizplus · Accepted Answer

Penicillin inhibits the synthesis of peptidoglycan, which is a component of bacterial cell walls. Therefore, the partner of Penicillium must have lacked peptidoglycan in its cell wall.

Figure 311 Below Depicts the Outline of a Large Fairy Ring