The Apicomplexans have gone through extensive evolutionary reduction, losing their endosymbiotic chloroplast to:
A) allow only for phototrophic dark reactions
B) produce low-levels of ATP as backup metabolism
C) fix carbon dioxide only
D) absorb blue/green light only
E) complete one step of fatty acid metabolism

Question

Quizplus · Accepted Answer

Apicomplexans, through evolutionary reduction, have lost their endosymbiotic chloroplast but retained a remnant organelle (the apicoplast) that is involved in various essential metabolic pathways, including one step of fatty acid metabolism. This adaptation reflects their parasitic lifestyle, where they rely on their hosts for nutrients and energy, thus negating the need for photosynthesis.

The Apicomplexans Have Gone Through Extensive Evolutionary Reduction, Losing Their