Which of the following monomers would be used to make the double helix of a dna molecule?
a monomer made up of a nitrogenous base, a five-carbon sugar, and a phosphate group bonded together.
a monomer with an amino group, carboxylic acid, hydrogen atom, and r group bonded to a central carbon atom.
a monomer with the formula c6h12o6. five carbon atoms and one oxygen atom form a hexagonal ring, with the other atoms bonded to that ring.
a molecule made up of four carbon rings with other atoms bonded to those rings.

Identify the examples in which sam interacts only with natural resources

If animal agriculture was eliminated, how much grain would become available for human consumption?

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.