True/False 16. Members of a bacterial phylum generally share a common ancestor a

Question

True/False 16. Members of a bacterial phylum generally share a common ancestor and also exhibit common morphologies and metabolic strategies. 17. Eukaryotic chloroplasts have evolved from what was originally an endosymbiotic relationship between an ancestral eukaryote and cyanobacterium. 18. The genetic material for the earliest life forms on earth was probably RNA rather than DNA. 19. All nonoxygenic photosynthetic bacteria group within a single phylum within the domain Bacteria. 20. Eukaryotes show greater size variation than the other two domains of life.

Explanation / Answer

16. True

Explanation: Bacterial phylum have porin proteins which is common. It helps is metabolic strategies.

17. True

Explanation: Eukaryotic chloroplasts evolved from endosymbiotic cyanobacterium living within a mitochondria-containing eukaryotic host cell.

18. True

Explanation : RNA evolved earlier than DNA. This hypothesis is known as RNA world hypothesis.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.