Answer:
Always carry the microscope with two hands. One on the arm and one underneath the base of the microscope.
I’m pretty sure it would be D.
the double helix is hydrogen bonded through the bases only so the bases are inside the helix only
as adenine combines with thymine and guanine with cytosine
phosphate are in the exterior of it
sugar groups constitute the double helix.
You are right sugar is a mixture and salad, water and potassium are all wrong.
Your Welcome
