GRE Subject Test: Biochemistry, Cell, and Molecular Biology : Help with Nucleoid Structure and Function
Study concepts, example questions & explanations for GRE Subject Test: Biochemistry, Cell, and Molecular Biology
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Example Questions
Example Question #1 : Prokaryotic Genome
Which comparisons between eukaryotic and prokaryotic genomes are true?
Both types of genomes have large spacer regions between genes
Both genomes are replicated in the nucleus
Prokaryotic genomes frequently have many transposable elements
All of these
Eukaryotic genes are often single and not in operons like prokaryotic genes
Eukaryotic genes are often single and not in operons like prokaryotic genes
The only true comparison of those listed is that eukaryotic genes are not often present in operons, like prokaryotes often have (think the frequently studied lac operon). Eukaryotes, not prokaryotes, have many transposable elements (a contributing factor to why our genomes are so large). Prokaryotes do not have large spacer regions between their genes, their genomes are often extremely compact. Prokaryotic cells lack nuclei, thus, DNA replication occurs in the cytosol.
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