Sam's defective cytochrome b enzyme results in the malfunction of the mitochondrial system for
a. electron transport.
b. dna replication
c. atp synthetase
d. mitochondrial protein production.

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

What enzyme is most important for dna replication and why?

What controls activities within a eukaryotic cell?