What free-living organisms developed into both mitochondria and chloroplasts?
A) protists
B) animals
C) bacteria
D) plants
C
Biology & Microbiology
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DNA repair mechanisms occur
A. only in prokaryotes. B. only in eukaryotes. C. in both eukaryotes and prokaryotes. D. in neither eukaryotes or prokaryotes.
Biology & Microbiology
Selective permeability of the cell membrane is controlled by
a. kinetic energy. b. lipids. c. proteins. d. lipids and proteins. e. electrolytes.
Biology & Microbiology
Name three functional RNAs unique to eukaryotes
What will be an ideal response?
Biology & Microbiology
For the inducible lac operon to be turned on, the
a. lactase (enzyme) must not be in excess. b. substrate (lactose) must be absent. c. substrate must be present and bind the repressor protein. d. RNA polymerase must be blocked from transcribing the genes.
Biology & Microbiology