Question

the first organisms on earth were mostly likely ______ cells.
a prokaryotic
b eukaryotic
a(n) ______ cell has a nucleus and typical organelles.
a prokaryotic
b eukaryotic
all cells contain ______
a only dna
b only rna
c dna, rna, or both

Explanation:

1. The first organisms on Earth were simple and lacked a nucleus, which are prokaryotic cells.
2. Eukaryotic cells have a nucleus and typical organelles.
3. All cells contain both DNA (for genetic - information storage) and RNA (involved in protein - synthesis and other processes).

Answer:

1. A. prokaryotic
2. B. eukaryotic
3. C. DNA, RNA, or Both