Problema 4 · Biología URV Test Practice: Eukaryotes and Fungi

a. Which ecological niche is typically favored by free-living and parasitic kinetoplastids?

Solución: b) Aquatic ecosystems and biological host fluids

b. Which protistan lineage is recognized for possessing hydrogenosomes instead of classical mitochondria?

Solución: a) Parabasalids

c. What is the function of the apicoplast in apicomplexan biology?

Solución: c) Housekeeping biochemical synthesis (fatty acids, isoprenoids) retaining genetic functions

d. Which nuclear morphology characterizes diplomonads?

Solución: c) Two equivalent, transcriptionally active nuclei of equal size

e. Which algal division shares the closest phylogenetic relationship with terrestrial embryophytes?

Solución: b) Charophycean green algae

f. Which protist clade harbors anaerobic organelles called hydrogenosomes?

Solución: a) Parabasalids

g. Which infectious agent causes human African sleeping sickness?

Solución: c) Trypanosoma brucei

h. What structural complexity is exhibited by the green alga Chara?

Solución: d) Macroscopic, multicellular branching thallus

i. Which microalgal genus is prominently exploited in industrial biofuel fermentation?

Solución: b) Chlorella

j. What represents the definitive distinction between phototrophic and heterotrophic protists?

Solución: b) Utilization of radiant solar light for energy transduction