During the synthesis of messenger rna (mrna) from dna, how many strands of dna are copied to produce a single strand of mrna a. thousands b. hundreds c. two d. one

Woah this is middle school biology? I'm a college biochemistry major and this is something we only introduce at the end of the first semester. How wild???

Anyways, I believe that one of the two strands of the DNA helix is needed for mRNA to replicate the genetic code with DNA primerase. Other techniques require multiple strands but the transcription process only needs one so the answer is D. :)

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

answer: oof wait

explanation: