Messenger RNA performs the bulk of its work in which of the following cellular compartments? *
the cytoplasm
the cell wall
O the nucleolus
the mitochondria

Drag the correct tiles to the image. not all tiles will be used. the diagram is a schematic representation of the electron transport mechanism in mitochondria. label the diagram to complete the model.

Which of the following produces carbon dioxide? a. plants b. animals c. decomposers d. all of the above

Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation