Blog

Examine the following image and then choose the correct statement which summarizes the data. Purple spheres and dots represent S. purpuratus eggs and bindin, respectively.  While green spheres and dots represent S. franciscanus eggs and bindin protein, respectively.  

Which of the following is the significant lipid component of the cell walls of acid-fast bacteria?

A _______ stain is one that colors the background surrounding the cell, leaving the cell itself unstained.

How will you select and grow a resistant strain of E. coli in an experiment?

The new strand of nucleotides formed during DNA replication is called the _____ strand.

How do you smear a bacterial culture onto the microscope glass slide?

A student was performing the Kinyoun’s acid fast staining method on a sample of bacteria. The resulting stained slide contained only cells that appeared blue when visualized using a microscope. Which of the following could explain why only blue cells were present?   No acid-fast bacteria are present on the slide The student forgot the methylene blue staining step The student forgot the carbolfuchsin staining step The student forgot the acid-alcohol decolorization step  

Which of the following is stained during the first part of the capsule staining procedure?

________ is defined as the use of living organisms to perform a task that benefits humans and other living organisms. 

In the DNA isolation process, ________ is used to break down the protein complexes and allow the DNA molecules to easily precipitate.