What substances are used up as the reactants in cellular respiration? 1: o2 and h2o 2: o2 and c6h12o6 3: co2 and c6h12o6 4: co2 and h2o

Which structure in the cardiovascular system connect arteries to veins?

Read the article and use the information to answer the questions that follow discovering the structure of dna explain how the discoveries by rosalind franklin watson and crick build an accurate model of dna done

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids