Question

Which of the following is NOT true about Gram-positive bacteria? Question 6 options: They stain purple...

Which of the following is NOT true about Gram-positive bacteria?

Question 6 options:

They stain purple after the Gram stain procedure.

Their cell walls consist of up to 90% peptidoglycan.

Their cell walls contain teichoic acids.

Their cell walls include an outer membrane.

Which of the following statements describing the different types of microorganisms is FALSE?

Question 54 options:

Fungi are eukaryotic organisms that consist of molds, mushrooms, & yeast

Parasites live in or on another organism in a non-mutual relationship

Bacteria are single celled organisms capable of independent metabolism

Algae are not capable of independent metabolism

Selective toxicity can BEST be defined as…

Question 56 options:

The ability of a drug to kill the pathogen regardless of side effects to the host cells

The ability of a drug to kill Gram-positive but not Gram-negative bacteria

The ability of a drug to kill pathogens but leave normal flora and non-pathogens unharmed

The ability of a drug to target a pathogen but leave host cells relatively unharmed

Which pathogen is NOT correctly matched with its disease?

Question 62 options:

Rhinovirus – common cold

Hepatitis A – chronic hepatitis and cirrhosis

Neisseria meningitides – meningitis

Human Immunodeficiency Virus – AIDS

Which of the following would be an example of a broad spectrum antibiotic?

Question 64 options:

An antibiotic used to treat gram-negative pathogens in the Enterobacteriaceaefamily

An antibiotic used to treat a variety of gram-positive and gram-negative infections

An antibiotic used to treat Mycobacterium tuberculosis infections

Homework Answers

Answer #1

Answer for question 6 - Their cell wall include an outer membrane .

Explanation -

The Gram positive bacteria contains the thick peptidoglycan in thier cell wall and retain the purple color by staining with the crysatl violet . The gram positive bacteria contains teichoic acid and build a complex with lipoid named as lipoteichoic acids acting as a chelating agent.The gram positive bacteria doesn't contain the outer lipid membrane whereas gram negative bacteria contains thick outer lipid membrane and thin peptidoglycan in cell wall.

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