Which statement about rna is false?
a. rna is double stranded rna contains the sugar ribose
b. rna contains a nitrogen base called uracil
c. rna contains a nitrogen base called adenine
d. rna is composed of building blocks called nucleotides

Eukaryotic cells are theorized to have evolved from prokaryotes called the endosymbiotic theory. this explains that the most primitive eukaryotic cell engulfed a prokaryotic cell (by the process of phagocytosis) that is capable of cellular respiration and another prokaryotic cell that is capable of photosynthesis. these prokaryotic cells eventually became organelles and these organelles are the mitochondria and the chloroplast

Very hard to understand