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A: An enzyme is a biological catalyst that increases the rate of biochemical reactions.
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A: Antibiotic resistance is a phenomenon by which microorganisms like bacteria gain resistance to a…
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A: The answer is here
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Q: action of DNA inhibitors antibiotics
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A: The migration of genetic code across unicellular and/or multicellular life forms between one…
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Q: Which form of horizontal gene transfer is shown in the following diagram? Recipient Donor DNA…
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Pathogenicity
Infection and Transmission
The infections are generated by the pathogenic organisms present in the environment. They maintain the capacity to invade a host body and establish colonies. A disease caused by such infectious agents is called a communicable disease or transmissible disease. These diseases spread through diverse means including blood, food, water, air, or vectors.
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- The term "Superbug" refers to? A. Certain bacteria strain that can grow in all kinds of unfavorable conditiions B. Certain bacteria strain is more toxic than all the viruses C. Certain bacteria strain that is resistant to all available antibiotics D. Certain bacteria strain that grows faster than any other strainsBecause bacteria are able to replicate at high rates, they aresubjected to mistakes or mutations being made in their nucleo-tide sequence. For example, the nucleotide sequence in a genecoding for a protein might be AATTGGCCA but because ofmutation might become GGTTGGCCA. How may such a mu-tation become beneficial to the bacterium? How may it becomeharmful?During the process of conjugation between two bacteria, each bacterium transfers some of its DNA into the other bacterium. True False
- Hana comes from an island town of 2000 people. She goes to the mainland with a friend and there they catch a highly contagious virus. A week after their return to their island-town, 8 people are infected. How many will be affected after another week? If there are 150 bacteria after 2 hours and 900 bacteria after 6 hours, how many bacteria were present initially? How many bacteria are there after 10 hours?In the experiment of Avery, McLeod, and McCarty, the additionof RNase or protease to a DNA extracta. prevented the conversion of type S bacteria into type R bacteria.b. allowed the conversion of type S bacteria into type R bacteria.c. prevented the conversion of type R bacteria into type S bacteria.d. allowed the conversion of type R bacteria into type S bacteria.Give typing answer with explanation and conclusion to all parts Which of the following factors contributes to the rise of antibiotic resistance? SELECT ALL THAT APPLY intron removal spontaneous mutations selective pressure induced mutations horizontal gene transfer
- Given that antibiotic-resistant strains of bacteria are a concern to the general health of a population, what can be done to prevent their development?The Kishony performed a simple but elegant experiment using a “mega-plate.” Which of the following is a fair conclusion that can be drawn from this study? The majority of antibiotic resistance occurs via horizontal gene transfer (HGT) between Actinobacteria Sensitive bacteria may acquire resistance to high concentrations of the antibiotic through many mutations Bacteria will gradually lose resistance to an antibiotic if you plate them on a large enough plate Bacteria will migrate via chemotaxis away from recombinant phage used in phage therapyA bacterium is infected with an experimentally constructedbacteriophage composed of the T2 phage protein coatand T4 phage DNA. The new phages produced would have(A) T2 protein and T4 DNA.(B) T4 protein and T2 DNA.(C) T2 protein and T2 DNA.(D) T4 protein and T4 DNA.
- how can bacteria populations become resistant to antibiotics? use the terms pre- existing, inherited, variation, survive, over generations and resistantIn terms of microbial pathogenicity, molecular Koch's postulates are a set of experimental criteria that show: A microbe is the aetiological agent of a disease A gene encodes a product that contributes to disease A gene encodes a product that contributes to immunity to a disease A mutation does not contribute to diseaseIn Griffith's experiment, the S type bacteria are harmless, but can be transformed into the pneumonia-causing bacteria.