MIDTERM EXAM PAGE 10 BIO 26 47. Penicillin is most effective against infections
ID: 88395 • Letter: M
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MIDTERM EXAM PAGE 10 BIO 26 47. Penicillin is most effective against infections caused by a) Gram positive bacteria b) viruses c) Fungi d) Protozoans e) Gram negative bacteria 48. The reason that one continues to get the common cold is that a) The causative agent does not stimulate the immune system b) The causative agent hides inside of cells c) There are many different viruses that cause this disease d) Antibodies are not made against the virus e) None of the above 49, Which disease is transmitted through the bit of a mosquito? a) Yellow fever b) Mumps c) Hepatitis type A e) Walking pneumonia 50, what was one of the first and most useful microscopic tests for classification bacteria that is still important today? a) Gram stain b) Flagella stains c) Simple stain d) Negative stain for capsule e) Acid fast stainExplanation / Answer
47. Penicillin is most effective against gram positive bacteria
48.C is the correct answer Although many types of viruses can cause a common cold, rhinoviruses are the most common culprit.
49 Yellow fever is transmitted through mosquito bite
50 gram stain is the currect answer
17 .Penicillin acts by cleaving the peptidoglycan layer of the cell wall. But in gram negative bacteria, there is an outer layer of lipid around the peptidoglycan. So the penicillin can not act on peptidoglycan and are resistant.D is correct
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