What are the antibiotics obtained from bacteria? -Biology

What are the antibiotics obtained from bacteria? -Biology
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What antibiotics are obtained from fungi?

Description : What antibiotics are obtained from fungi?

Last Answer : penicilin,cephalosporin and much more from the filamentous group of fungi that is penicilium notatum and others sprcies

What is the cellular functions that occur when antibiotics attack a bacteria cell?

Description : What is the cellular functions that occur when antibiotics attack a bacteria cell?

Last Answer : Need answer

How do antibiotic resistant bacteria resist antibiotics?

Description : How do antibiotic resistant bacteria resist antibiotics?

Last Answer : becomes resistant to antibiotics mostly by the misuse of antibiotics

If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually resistant species, penicillin is not indicated c. Immediate operative intervention and aggressive resection of all involved tissues is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

Description : If a necrotizing soft tissue infection is considered, therapy mandates: a. Empiric administration of antibiotics active against gram-positive, gram-negative, and anaerobic bacteria b. Due to usually ... is mandatory d. The use of hyperbaric oxygen has been demonstrated to be clearly advantageous

Last Answer : Answer: a, c Identification of a necrotizing, soft tissue infection mandates immediate operative intervention with aggressive resection of all involved tissues and empiric ... remains without controlled trials demonstrating any additional benefits derived from hyperbaric oxygen therapy

A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain of the fluid, which will likely demonstrate multiple bacteria including predominantly gram-positive rods b. A CT scan is indicated in a stable patient to define the extent of the disease c. Broad spectrum antibiotics followed with prompt extensive debridement is indicated d. A safe guideline is to resect infected necrotic tissue so that a several centimeter margin of grossly normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation

Description : A diabetic develops a severe perineal infection with skin necrosis, subcutaneous crepitance, and drainage of a thin, watery, grayish and foul-smelling fluid. Management should consist of: a. Gram stain ... normal, healthy tissue can be achieved e. A colostomy is of little benefit in this situation

Last Answer : Answer: a, b, c, d The presence of severe perineal infection (referred to as Fournier gangrene when this process involves the perineum and scrotum in males) is associated with a ... often provides improved wound care and patient management, although it is not invariably a positive outcome

Bacteria are more sensitive to antibiotics at which phase of growth curve? a. Decline phase b. Stationary phase c. Lag phase d. Log phase

Description : Bacteria are more sensitive to antibiotics at which phase of growth curve? a. Decline phase b. Stationary phase c. Lag phase d. Log phase

Last Answer : Ans: D

The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes and inhibit bacterial protein synthesis (c) They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antiimicrobial action is (a) They chelate Ca2+ ions and alter permeability of bacterial cell membrane (b) They bind to 30S ribosomes ... peptide chain in the bacteria (d) They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : Ans: B

Superinfections are more common with (a) Use of narrow spectrum antibiotics (b) Short courses of antibiotics (c) Use of antibiotics that are completely absorbed from the small intestines (d) Use of antibiotic combinations covering both gram positive and gram negative bacteria

Description : Superinfections are more common with (a) Use of narrow spectrum antibiotics (b) Short courses of antibiotics (c) Use of antibiotics that are completely absorbed from the small intestines (d) Use of antibiotic combinations covering both gram positive and gram negative bacteria

Last Answer : Ans: D

Widespread and prolonged used of an antibiotic leads to emergence of drug resistant strains because antibiotics (a) Induce mutation in the bacteria (b) Promote conjugation among bacteria (c) Allow resistant strains to propagate preferentially (d) All of the above

Description : Widespread and prolonged used of an antibiotic leads to emergence of drug resistant strains because antibiotics (a) Induce mutation in the bacteria (b) Promote conjugation among bacteria (c) Allow resistant strains to propagate preferentially (d) All of the above

Last Answer : Ans: C

Which is the effect of antigen in an ill person? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of antiserum against bacteria (4) It prevents the growth of bacteria

Description : Which is the effect of antigen in an ill person? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of antiserum against bacteria (4) It prevents the growth of bacteria

Last Answer : (2) It increases the production of antibiotics Explanation: Vaccines containing antigens are introduced into the body, stimulating the immune system response by instructing B cells, with assistance from T cells, to ... , and send it to the T cells so that an immune system response can be mobilized.

The main reason why antibodies could not solve all the problems of bacteria mediated disease is (a) decreased efficiency of the immune system (b) insensitivity of the individual following prolonged exposure to antibiotics (c) development of mutant strains resistant to antibodies (d) inactivation of antibiotics by bacterial enzymes.

Description : The main reason why antibodies could not solve all the problems of bacteria mediated disease is (a) decreased efficiency of the immune system (b) insensitivity of the individual ... development of mutant strains resistant to antibodies (d) inactivation of antibiotics by bacterial enzymes.

Last Answer : (c) development of mutant strains resistant to antibodies

Antibiotics are products of (a) Bacteria and fungi (b) Fungi and parasites (c) Parasites and bacteria (d) Fungi and viruses

Description : Antibiotics are products of (a) Bacteria and fungi (b) Fungi and parasites (c) Parasites and bacteria (d) Fungi and viruses

Last Answer : (a) Bacteria and fungi

The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorisedas (a) cyanobacteria (b) archaebacteria (c) chemosynthetic autotrophs (d) heterotrophic bacteria.

Description : The most abundant prokaryotes helpful to humans in making curd from milk and in production of antibiotics are the ones categorisedas (a) cyanobacteria (b) archaebacteria (c) chemosynthetic autotrophs (d) heterotrophic bacteria.

Last Answer : (d) heterotrophic bacteria

Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined “hot zone” for a period of a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were inhaled, bacteria will be killed immediately upon release from spores. Those who have symptoms of fever, cough, headache, chills, and especially evidence of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.

Description : Prophylaxis antibiotic for anthrax is given to people with symptoms who have been in a defined hot zone for a period of a) 60 days. Those with symptoms who have been in the hot zone should ... . Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic

Last Answer : a) 60 days. Those with symptoms who have been in the hot zone should be given 60 days of prophylactic antibiotic. The aim of prophylaxis is to assure that if spores were ... of mediastinal lymph node involvement should be treated with intravenous antibiotics and respiratory support, if needed.

Bacteria are most sensitive to antibiotics at which phase of growth curve A Lag phase B Log Phase C Stationary phase D Phase of Decline

Description : Bacteria are most sensitive to antibiotics at which phase of growth curve A Lag phase B Log Phase C Stationary phase D Phase of Decline

Last Answer : B Log Phase

_______ is suspension of dead or weakened microbes. a) vaccine b)antibodies c)antibiotics d)bacteria

Description : _______ is suspension of dead or weakened microbes. a) vaccine b)antibodies c)antibiotics d)bacteria

Last Answer : a) vaccine

Aminoglycoside antibiotics exert the following action(s) on sensitive bacteria: A. Induce synthesis of defective proteins B. Make bacterial cell membrane more leaky C. Augment their own carrier mediated entry into the bacteria D. All of the above

Description : Aminoglycoside antibiotics exert the following action(s) on sensitive bacteria: A. Induce synthesis of defective proteins B. Make bacterial cell membrane more leaky C. Augment their own carrier mediated entry into the bacteria D. All of the above

Last Answer : D. All of the above

The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes and inhibit bacterial protein synthesis C. They bind to 50S ribosomes and interfere with translocation of the growing peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Description : The most important mechanism by which tetracycline antibiotics exert antimicrobial action is: A. They chelate Ca2+ ions and alter permeability of bacterial cell membrane B. They bind to 30S ribosomes ... peptide chain in the bacteria D. They interfere with DNA mediated RNA synthesis in bacteria

Last Answer : B. They bind to 30S ribosomes and inhibit bacterial protein synthesis

Superinfections are more common with: A. Use of narrow spectrum antibiotics B. Short courses of antibiotics C. Use of antibiotics that are completely absorbed from the small intestines D. Use of antibiotic combinations covering both gram positive and gram negative bacteria

Description : Superinfections are more common with: A. Use of narrow spectrum antibiotics B. Short courses of antibiotics C. Use of antibiotics that are completely absorbed from the small intestines D. Use of antibiotic combinations covering both gram positive and gram negative bacteria

Last Answer : D. Use of antibiotic combinations covering both gram positive and gram negative bacteria

Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

Description : Widespread and prolonged use of an antibiotic leads to emergence of drug resistant strains because antibiotics: A. Induce mutation in the bacteria B. Promote conjugation among bacteria C. Allow resistant strains to propagate preferentially D. All of the above

Last Answer : C. Allow resistant strains to propagate preferentially

The most abundant prokaryotes helpful to humans in marking curd from milk and in production of antibiotics are the ones categorised as (1) Heterotrophic bacteria (2) Cyanobacteria (3) Archaebacteria (4) Chemosynthetic autotrophs

Description : The most abundant prokaryotes helpful to humans in marking curd from milk and in production of antibiotics are the ones categorised as (1) Heterotrophic bacteria (2) Cyanobacteria (3) Archaebacteria (4) Chemosynthetic autotrophs

Last Answer : (1) Heterotrophic bacteria

Which is the effect of antigen in an ill person ? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of anti-serum against bacteria (4) It prevents the growth of bacteria

Description : Which is the effect of antigen in an ill person ? (1) It increases the production of W.B.C. (2) It increases the production of antibiotics (3) It increases the production of anti-serum against bacteria (4) It prevents the growth of bacteria

Last Answer :  It increases the production of antibiotics

Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria by conjugation. (c) Bacteria obtained its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus.

Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria by conjugation. (c) Bacteria obtained its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Description : Which statement is correct for bacterial transduction? (a) Transfer of some genes from one bacteria to another bacteria through virus. (b) Transfer of genes from one bacteria to another bacteria ... its DNA directly from mother cell. (d) Bacteria obtained DNA from other external source.

Last Answer : (a) Transfer of some genes from one bacteria to another bacteria through virus

Agar – Agar is obtained from – (a) Fungi (b) Algae (c) Moss (d) Bacteria

Description : Agar – Agar is obtained from – (a) Fungi (b) Algae (c) Moss (d) Bacteria

Last Answer : (b) Algae 

Are antibiotics effective in preventing and treating the new coronavirus? -Biology

Description : Are antibiotics effective in preventing and treating the new coronavirus? -Biology

Last Answer : No, antibiotics do not work against viruses, only bacteria. The new coronavirus (2019-nCoV) is a virus and, therefore, antibiotics should not be used as a means of prevention or ... are hospitalized for the 2019-nCoV, you may receive antibiotics because bacterial co-infection is possible.

What are antibiotics? What precautions must be taken while taking antibiotics? -Biology

Description : What are antibiotics? What precautions must be taken while taking antibiotics? -Biology

Last Answer : Antibiotics are the medicines which kill or stop the growth of the disease-causing microbes. They are manufactured by growing specific microorganisms. They are used to cure a variety of diseases. It ... . Antibiotics are, however, not effective against cold and flu as they are caused by viruses.