[Campbell Biology P.160] Based on Figure 6.17 c and its accompanying description, which of t... | Practice Question

Based on Figure 6.17 c and its accompanying description, which of the following statements about the light micrograph of Euglena gracilis is correct?

  • A: The mitochondrial matrix is stained red, and nuclear DNA appears as bright yellow spots.
  • B: The mitochondria form a branched tubular network, and mitochondrial DNA appears as bright yellow spots.
  • C: Nuclear DNA is stained green, and mitochondrial DNA appears as bright yellow spots.
  • D: The nuclear DNA is stained red, but mitochondrial DNA is not visible in this light micrograph.

Explanation

According to the description of Figure 6.17 c , the mitochondria in Euglena gracilis form a branched tubular network, and the mitochondrial DNA appears as bright yellow spots, while the mitochondrial matrix is stained green and nuclear DNA is stained red. Option B correctly states these details.