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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 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?
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?
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
Penicillin and lysozyme are similar in that
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What is one of the key properties of herpes viruses?
What is one of the key properties of herpes viruses?
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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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