Bacteria Surface Components Quiz

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Which type of bacteria has a multi-layered and more complex cell wall?

Gram-positive

Both gram-positive and gram-negative

Gram-negative (correct)

Neither gram-positive nor gram-negative

What is the main component of the cell wall in gram-positive bacteria?

Outer membrane

Teichoic acid

Lipopolysaccharide

Peptidoglycan (correct)

Which component is absent in the cell wall of gram-positive bacteria but present in gram-negative bacteria?

Periplasmic space

Lipoteichoic acid

Teichoic acid

Outer membrane (correct)

What holds enzymes and proteins in the periplasmic space of bacterial cell walls?

Fluid known as periplasm Signup and view all the answers

What mainly consists of 50-90% of the dry weight of the cell wall in gram-positive bacteria?

Peptidoglycan Signup and view all the answers

What is the function of the bacterial cell wall?

Prevents the bursting of cells by maintaining their osmotic integrity Signup and view all the answers

What is the primary component of the bacterial cell wall responsible for maintaining shape, size, and rigidity?

Peptidoglycan Signup and view all the answers

How does the bacterial cell wall aid in cell division?

By providing a primer for cell division and biosynthesis Signup and view all the answers

Which surface component of bacteria is responsible for locomotion?

Flagellae Signup and view all the answers

In what way does the bacterial cell wall contribute to protection of cells?

By preventing the bursting of cells by maintaining their osmotic integrity Signup and view all the answers

Which of the following is NOT a function of the bacterial cell wall?

Selectively permeable to molecules Signup and view all the answers

What is the primary component of the bacterial cell wall in gram-positive bacteria?

Peptidoglycan Signup and view all the answers

Which surface component of bacteria is responsible for maintaining their osmotic integrity?

Cell membrane Signup and view all the answers

In what way does the bacterial cell wall contribute to protection of cells?

By maintaining the microorganism's shape and rigidity Signup and view all the answers

Which type of bacteria has a multi-layered and more complex cell wall?

Gram-negative bacteria Signup and view all the answers

What is the function of lipoteichoic acid in bacterial cell walls?

It acts as a selective permeability barrier Signup and view all the answers

What is the main difference in the composition of peptidoglycan in gram-positive and gram-negative bacteria cell walls?

The peptide cross-bridges are bonded by 5 glycine amino acids in gram-negative bacteria and by direct peptide bonds in gram-positive bacteria Signup and view all the answers

Which component is present in the cell wall of gram-negative bacteria but absent in gram-positive bacteria?

Lipopolysaccharide (LPS) Signup and view all the answers

What is the primary function of the periplasmic space in bacterial cell walls?

To hold enzymes and proteins for biochemical reactions Signup and view all the answers

What mainly consists of 50-90% of the dry weight of the cell wall in gram-positive bacteria?

Peptidoglycan Signup and view all the answers

Bacteria Surface Components Quiz

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Questions and Answers

Which type of bacteria has a multi-layered and more complex cell wall?

What is the main component of the cell wall in gram-positive bacteria?

Which component is absent in the cell wall of gram-positive bacteria but present in gram-negative bacteria?

What holds enzymes and proteins in the periplasmic space of bacterial cell walls?

What mainly consists of 50-90% of the dry weight of the cell wall in gram-positive bacteria?

What is the function of the bacterial cell wall?

What is the primary component of the bacterial cell wall responsible for maintaining shape, size, and rigidity?

How does the bacterial cell wall aid in cell division?

Which surface component of bacteria is responsible for locomotion?

In what way does the bacterial cell wall contribute to protection of cells?

Which of the following is NOT a function of the bacterial cell wall?

What is the primary component of the bacterial cell wall in gram-positive bacteria?

Which surface component of bacteria is responsible for maintaining their osmotic integrity?

In what way does the bacterial cell wall contribute to protection of cells?

Which type of bacteria has a multi-layered and more complex cell wall?

What is the function of lipoteichoic acid in bacterial cell walls?

What is the main difference in the composition of peptidoglycan in gram-positive and gram-negative bacteria cell walls?

Which component is present in the cell wall of gram-negative bacteria but absent in gram-positive bacteria?

What is the primary function of the periplasmic space in bacterial cell walls?

What mainly consists of 50-90% of the dry weight of the cell wall in gram-positive bacteria?

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