MICR290 - MIDTERM STUDY GUIDE
EXAM AND ACTUAL ANSWERS 2025.
Which of the following prokaryotic cells possesses an outer membrane? - Answer Gram-
negative bacteria
Free-living microorganisms characterized by the absence of a nucleus are called: - Answer
Prokaryotes
Using a microscope, you observe an amoeba moving toward a food source. This is an example
of: - Answer Chemotaxis
Which of the following is an incorrect pairing? - Answer protozoa-prokaryote
The process by which parts of DNA getting copied to make messenger RNA is called: - Answer
Transcription
Presence of this structure in spiral shaped bacteria (spirochetes) gives them penetrating power
into the tissues. - Answer Axial filament
The cell walls of __________ contain peptidoglycan. - Answer Bacteria
Which of the following organelles is responsible for producing most of the ATP in a eukaryotic
cell? - Answer Mitochondria
Which of the following bacterial cell structures plays an important role in the creation of
biofilms? - Answer Slime layer
In bacteria, transfer of DNA from one cell to another by way of sex pilus is called: - Answer
Conjugation
Which of the following structures are present in both eukaryotic and prokaryotic cells? - Answer
Ribosomes
EXAM AND ACTUAL ANSWERS 2025.
Which of the following prokaryotic cells possesses an outer membrane? - Answer Gram-
negative bacteria
Free-living microorganisms characterized by the absence of a nucleus are called: - Answer
Prokaryotes
Using a microscope, you observe an amoeba moving toward a food source. This is an example
of: - Answer Chemotaxis
Which of the following is an incorrect pairing? - Answer protozoa-prokaryote
The process by which parts of DNA getting copied to make messenger RNA is called: - Answer
Transcription
Presence of this structure in spiral shaped bacteria (spirochetes) gives them penetrating power
into the tissues. - Answer Axial filament
The cell walls of __________ contain peptidoglycan. - Answer Bacteria
Which of the following organelles is responsible for producing most of the ATP in a eukaryotic
cell? - Answer Mitochondria
Which of the following bacterial cell structures plays an important role in the creation of
biofilms? - Answer Slime layer
In bacteria, transfer of DNA from one cell to another by way of sex pilus is called: - Answer
Conjugation
Which of the following structures are present in both eukaryotic and prokaryotic cells? - Answer
Ribosomes
