Taking a timed online course. Please help!
Biologists use ball-and-stick models to study complex molecules by representing atoms with balls and bonds with sticks. DNA is a biological molecule that contains millions of atoms. What is a limitation of using a ball-and-stick model for DNA?
A.Some kinds of atoms that are found in DNA must be left out of the models.
B.DNA molecules are so large that the size and cost of the model is too great.
C.It is impossible to represent DNA replication with a model.
D.The chemical bonds between the atoms in DNA must be part of the models.

Question

Taking a timed online course. Please help!
Biologists use ball-and-stick models to study complex molecules by representing atoms with balls and bonds with sticks. DNA is a biological molecule that contains millions of atoms. What is a limitation of using a ball-and-stick model for DNA?
A.Some kinds of atoms that are found in DNA must be left out of the models.
B.DNA molecules are so large that the size and cost of the model is too great.
C.It is impossible to represent DNA replication with a model.
D.The chemical bonds between the atoms in DNA must be part of the models.