Question

question 3 10 pts according to the endosymbiotic theory, what happened to some bacteria that were engulfed by larger cells?
○ they died instantly
○ they were immediately digested
○ they formed the cell wall
○ they remained intact and became symbionts
question 4 10 pts which organelle is believed to have evolved from bacteria that could use oxygen to produce atp energy?
○ chloroplast
○ nucleus
○ cell membrane
○ mitochondria

Explanation:

Question 3

The endosymbiotic theory states that some engulfed bacteria didn't die or get digested. Instead, they remained intact and developed a symbiotic relationship with the host cell. Options like dying instantly, immediate digestion, or forming cell walls don't align with the theory.

Mitochondria are thought to have evolved from bacteria (like proteobacteria) that could use oxygen for cellular respiration to produce ATP. Chloroplasts are from photosynthetic bacteria, nucleus and cell membrane have different evolutionary origins not related to oxygen - using ATP - producing bacteria.

Answer:

D. They remained intact and became symbionts

Question 4