Actinomycin D is an antibiotic drug that inhibits protien synthesis by blocking transcription. In some cells, the application of the drug does not affect the synthesis of certain protiens. Which of the following best explains such an occurrence?
a)Not al protiens need tRNA molecules for their syntehsis
b)The protiens that are made are using mRNA synthesized before application of the drug.
c)Nuclear protiens do not require the cytoplasmic machinery of ribosomes
d)DNA transcription is not necessary for protien synthesis.

What best describes lactic acid fermentation?

When analyzing tree rings, what do scientists assume a thin ring indicates?

The graph below compares the rates of reaction of a burning candle and an exploding firework. comparing chemical reactions what can you conclude from the graph? the reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires less energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs less rapidly than the reaction that causes a candle to burn. the reaction that causes a firework to explode requires more energy to start, and occurs more rapidly than the reaction that causes a candle to burn. mark this and return