Answer:
Eukaryotic cells arose through endosymbiotic events that gave rise to the energy-producing organelles within the eukaryotic cells such as mitochondria and chloroplasts. ... The endosymbiotic theory proposes that one organism engulfed another, and the two co-evolved together until they could not exist independently.
Explanation:
Answer:
Chloroplasts are found in plant cells only because chloroplasts contain chlorophyll which is essential for photosynthesis. Chlorophyll traps sunlight and uses it to prepare food for plants by the process of photosynthesis.
B. The amount of sleep students received before the exam
Viruses that lie dormant host cells until ready to multiply use the lytic cycle for reproduction
No because carbon does not form ionic bonds because it has 4 valence electrons. To form ionic bonds, carbon molecules must either gain or lose electrons.