Question 1
Methylene blue can be used to stain DNA because it
◦ forms ionic bonds with DNA.
◦ makes DNA electron dense.
◦ covalently bonds with DNA.
◦ changes the pH and therefore the structure of DNA.
◦ is an effective fixing agent for nucleic acids.
Question 2
The ________ stain makes use of malachite green.
◦ endospore
◦ negative
◦ electron microscopy
◦ acid-fast
◦ flagellar