With regard to their genomes, what is one major difference between viruses and bacteria?
a. Viral genomes are RNA; bacteria genomes are DNA.
b. Viral genomes can be replicated faster than bacterial genomes.
c. Viruses cannot replicate their own nucleic acids; bacteria can.
Ans: c. Viruses cannot replicate their own nucleic acids; bacteria can.
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A) fungal haustoria B) soredia C) fungal enzymes D) increased oxygen levels E) larger bacterial populations
Which of the boxes marked 1-4 correspond to plants with dark leaves?
A) 1 only B) 1 and 2 C) 2 and 3 D) 4 only E) 1, 2, and 3
Which is the smallest portion of a substance that retains the properties of an element?
a. atom b. compound c. ion d. molecule e. mixture
A lipid-soluble cofactor that can diffuse freely in the membrane of the electron transport chain and carry electrons across the membrane is ________.
A) ubiquinone (Q) B) Fe-S C) cytochrome c D) FADH2