Once i got a good nights sleep i passed the test. add a comma

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

If a cell's main function is to produce proteins to be excreted, which organelles would you expect to be larger

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism