Cell Membrane Functions Quiz

You have discovered a new coccoid-shaped microorganism with no nucleus, a rigid cell wall, and a diameter of 2 µm. Chemical tests reveal that it has a cell wall that is NOT made of peptidoglycan. What can you conclude about your organism?

• It is most likely a bacterium.

• It is gram-negative

• It is most likely an Archaea

• It is most likely a Eukarya

Which is true about eukaryotic microorganisms?

• All eukaryotic cells have a rigid cell wall.

• All eukaryotic cells have a membrane-bound nucleus, bacteria do not.

• Eukaryotes are never pathogens

• Eukaryotic cells lack ribosomes.

Which of the following microscopy techniques is shown in the image?

• Scanning Electron Microscopy

• Transmission Electron Microscopy

• Atomic Force Microscopy

• Dark Field Microscopy

Which of the following outcomes of a viral infection leads to rapid symptoms following infection?

• Acute infection

• Chronic infection

• Latent infection

• Persistent infection

Which best describes viral replication?

•   independent of the host cell's DNA but dependent on the host cell's enzymes and metabolism

  
  

•   independent of both the host cell's DNA and the host cell's enzymes and metabolism

  
  

•   dependent on the host cell's DNA and RNA

  
  

•   dependent on the host cell's DNA, RNA, enzymes, and metabolism

  
  

Which group of organisms have a lipopolysaccharide (LPS) layer?

• gram-positive Bacteria

• gram-negative Bacteria

• Archaea

• Eukarya

What is the smallest distance by which two objects can be separated and still be distinguished called?

• magnification

• refraction

• resolution

• fluorescence

Which of the following entities is not a cellular organism?

• A Bacterium

• An Archaeaum

• A virus

• A protozoa

Small self-replicating circular molecules of DNA in bacteria that carry genes which are not essential for survival of the cell.

• transposons

• plasmids

• viruses

In CRISPR systems, what kind of enzymatic activity do the Cas proteins have?

• endonuclease

• ligase

• polymerase

• phosphorylase