12 Questions
How do microorganisms primarily take in nutrients?
Passive diffusion
Which transport mechanism is utilized by all microorganisms for nutrient uptake?
Active transport
Which nutrient uptake mechanism is specific to Bacteria and Archaea?
Group translocation
What is the primary method of nutrient uptake in Eukarya?
Endocytosis
What is the main function of the bacterial cell wall peptidoglycan?
Maintains shape of the bacterium
Which type of bacteria has a thick peptidoglycan layer that appears purple in a Gram stain?
Gram positive
What distinguishes Gram negative bacteria from Gram positive bacteria in terms of peptidoglycan?
They have a thinner peptidoglycan layer and an outer membrane
What is the significance of the bacterial cell wall peptidoglycan in protecting the cell?
Helps protect the cell from osmotic lysis and toxic materials
What is the composition of the outer membrane of Gram negative cell walls?
Lipids, lipoproteins, and lipopolysaccharide (LPS)
Which type of bacteria has a thin layer of peptidoglycan surrounded by an outer membrane?
Gram negative
What is the main component of Gram negative cell walls?
Outer membrane
What is the key difference between Gram negative and Gram positive cell walls in terms of peptidoglycan?
Gram negative has a thin layer of peptidoglycan, while Gram positive has a thick layer
Test your knowledge about how microbes uptake nutrients through selectively permeable membranes, including passive diffusion, facilitated diffusion, active transport, group translocation, and endocytosis. Understand the different mechanisms used by microorganisms and the distinctions between Bacteria, Archaea, and Eukarya.
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