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Microbiology Questions

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Questions and Answers

The outer membrane of Gram negative cells is more permeable than the plasma membrane because:

The outer membrane has specialized porins.

LPS is larger than most membrane phospholipids. (correct)

The outer membrane is thinner.

It contains fewer proteins.

Which of the following statements about bacterial flagella is incorrect?

The flagella are composed of the protein flagellin.

Flagellar rotation is driven by the proton motive force.

The locomotion caused by flagella can be directed to move cells toward a source of nutrients.

Flagella are only found in Gram positive bacteria. (correct)

Which one of the following forms of immunity to viruses would be least likely to be life long?

Active immunity

Vaccination

Natural infection

Passive immunity (correct)

Penicillin and lysozyme are similar in that

<p>Both affect cell walls.</p> Signup and view all the answers

What is one of the key properties of herpes viruses?

<p>They can cause latent infections.</p> Signup and view all the answers

Study Notes

Gram Negative Cells

Outer membrane of Gram negative cells is more permeable than the plasma membrane because LPS is larger than most membrane phospholipids.

Bacterial Flagella

Flagella enable directed locomotion towards a source of nutrients.

Immunity to Viruses

Passive immunity is the type of immunity least likely to be lifelong.

Antibiotics and Enzymes

Penicillin and lysozyme are similar in that they both affect cell walls.

HIV and Immune System

HIV has the ability to evade the immune system.

Herpes Viruses

Herpes viruses have distinct properties.

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Description

This quiz consists of questions about microbiology, including cell structure, immunity, and antibiotic properties.