Marine Microbes and Ocean Carbon Control Quiz

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What is the purpose of comparing gene/genome sequences in bacteria?

To determine bacterial cell shapes

To study bacterial metabolism

To investigate antibiotic resistance

To identify new species (correct)

In the Gram stain method, what color do Gram-positive bacteria retain?

Red

Green

Violet (correct)

Blue

What characteristic distinguishes Gram-negative bacteria from Gram-positive bacteria?

Presence of nanotubes

Cell size

Structure of the cell wall (correct)

Type of gene sequences

What is the general size range of small bacterial cells like Mycoplasma genitalium?

$200-300$ nm Signup and view all the answers

Which bacterial species is known for being an oligotroph with low nutrient requirements?

Thiomargarita namibiensis Signup and view all the answers

What method can be used to characterize microbial communities by sequencing DNA from samples?

DNA sequencing Signup and view all the answers

Which microbial group is known for fixing nitrogen in the oceans?

Nitrogen-fixing bacteria Signup and view all the answers

What specialized compartments serve as homes for nitrogen-fixing bacteria in plants?

Root nodules Signup and view all the answers

Which bacterial group is known for its ability to naturally clean oil spills in oceans?

Oil-degrading bacteria Signup and view all the answers

What do some plastic polymers resemble, leading to the action of plastic-degrading bacteria on them?

Plant molecules Signup and view all the answers

Where does the Centre for Enzyme Innovation focus its efforts on optimizing and engineering bacterial enzymes?

Recycling plastics Signup and view all the answers

Which microbial organisms are known to thrive in various environments, including marine systems?

Archaea Signup and view all the answers

What is the main difference between Gram-positive and Gram-negative bacteria?

Gram-positive bacteria have a thick layer of peptidoglycan, while Gram-negative bacteria have a thin layer of peptidoglycan. Signup and view all the answers

Which bacterial shape is commonly associated with Escherichia coli?

Bacilli Signup and view all the answers

Why do Gram-negative bacteria appear pink to red in a Gram stain procedure?

They pick up the counterstain. Signup and view all the answers

What is a key function of marine environment bacteria?

Contributing to the nitrogen cycle by fixing gaseous N2. Signup and view all the answers

Why are microbes important for recycling carbon in the environment?

They 'eat' organic molecules and release CO2. Signup and view all the answers

In bacterial phylogenetics, what does gene sequencing help with?

Exploring the genetic diversity and evolutionary relationships among bacteria. Signup and view all the answers