A scientist is using a microscope to observe a type of bacteria.

Question

Which two structures would the scientist most likely see?

nucleus and DNA
DNA and cell wall
cell wall and nucleus
nucleus and chloroplast

Answer 1

The scientist would most likely see DNA and cell wall.

Most bacteria do not have a nucleus; instead, their genetic material (DNA) is typically found in a region called the nucleoid. In addition, bacteria have a cell wall that provides structure and protection. Therefore, among the options provided, DNA and cell wall are the most relevant structures for a scientist observing bacteria.