The antibiotic penicillin is obtained from which of the following? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

The antibiotic penicillin is obtained from which of the following? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells
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(3) fungus Explanation: Penicillins are a group of antibiotics used to treat a large range of bacterial infections. They are derived from Penicillium fungi and can be taken orally or via injection. Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming.
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The antibiotic penicillin is obtained from which of the following ? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Description : The antibiotic penicillin is obtained from which of the following ? (1) synthetic process (2) a bacterium (3) fungus (4) virus infected cells

Last Answer : fungus

The antibiotic Ampicillin is - (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Description : The antibiotic Ampicillin is - (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Last Answer : (2) obtained from a bacterium Explanation: Ampicillin is an antibiotic made from bacteria. Belonging to the penicillin group of beta-lactam antibiotics, ampicillin is able to penetrate Gram-positive ... group. That amino group helps the drug penetrate the outer membrane of gram-negative bacteria.

The antibiotic Ampicillin is : (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Description : The antibiotic Ampicillin is : (1) a synthetic drug (2) obtained from a bacterium (3) obtained from a plant extract (4) a semi-synthetic drug

Last Answer : obtained from a bacterium

Polio is caused by - (1) Bacterium (2) Fungus (3) Virus (4) Insect

Description : Polio is caused by - (1) Bacterium (2) Fungus (3) Virus (4) Insect

Last Answer : (3) Virus Explanation: Poliomyelitis , often called polio or infantile paralysis, is an acute, viral, infectious disease spread from person to person, primarily via the fecal-oral route.

What causes mumps? A. Fungus B. Bacterium C. Deficiency of vitamins D. Virus (Answer)

Description : What causes mumps? A. Fungus B. Bacterium C. Deficiency of vitamins D. Virus (Answer)

Last Answer : D. Virus (Answer)

The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.

Description : The unequivocal proof of DNA as the genetic material came from the studies on a (a) bacterium (b) fungus (c) viroid (d) bacterial virus.

Last Answer : (c) viroid

The experimental proof for semi-conservative replication of DNA was first shown in a (a) fungus (b) bacterium (c) plant (d) virus

Description : The experimental proof for semi-conservative replication of DNA was first shown in a (a) fungus (b) bacterium (c) plant (d) virus

Last Answer : (b) bacterium

The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus

Description : The experimental proof for semiconservative replication of DNA was first shown in a (1) Fungus (2) Bacterium (3) Plant (4) Virus

Last Answer : (2) Bacterium

Polio is caused by (1) Bacterium (2) Fungus (3) Virus (4) Insect

Description : Polio is caused by (1) Bacterium (2) Fungus (3) Virus (4) Insect

Last Answer : Virus

Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen

Description : Litmus is obtained from – (1) a bacterium (2) a fungus (3) an alga (4) lichen

Last Answer : (4) lichen Explanation: Litmus is a water-soluble mixture of different dyes extracted from lichens, especially Roccellatinctoria. It is often absorbed onto filter paper to produce one of the ... litmus paper is purple. Litmus can also be prepared as an aqueous solution that functions similarly

Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Description : Litmus is obtained from (1) a bacterium (2) a fungus (3) an alga (4) lichen

Last Answer : lichen

Penicillin’ which is used as an antibiotic is obtained from : Fungi The instrument that measures arterial blood pressure is known as :

Description : Penicillin’ which is used as an antibiotic is obtained from : Fungi The instrument that measures arterial blood pressure is known as :

Last Answer : Sphygmomanometer

During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as A- eclipse period B- rise period C- latent period D- burst size

Description : During the first 10 minutes after injection of phage DNA, no phage can be recovered by disrupting the infected bacterium. This is termed as A- eclipse period B- rise period C- latent period D- burst size

Last Answer : eclipse period

Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Description : Which of the following may be most likely to be missing from a gram-positive bacterium? A.Penicillin binding protein B.Peptidoglycan C.Lipopolysaccharide D.Phospholipid bilayer membrane

Last Answer : C.Lipopolysaccharide

Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Description : Under the electron microscope, you observe a cell with three different types of large organelles, each bounded by two membranes. The cell is most likely (a) A plant (b) An animal (c) A fungus (d) A bacterium

Last Answer : Ans:(a)

At which stage of HIV infection does one usually show symptoms of AIDS? (a) Within 15 days of sexual contact with an infected person (b) When the infected retro virus enters host cells (c) When HIV damages large number of helper T  - lymphocytes (d) When the viral DNA is produced by reverse transcriptase

Description : At which stage of HIV infection does one usually show symptoms of AIDS? (a) Within 15 days of sexual contact with an infected person (b) When the infected retro virus enters host cells (c) ... large number of helper T  - lymphocytes (d) When the viral DNA is produced by reverse transcriptase

Last Answer : (c) When HIV damages large number of helper T  - lymphocytes

Lysozyme that is present in perspiration, saliva and tears, destroys (a) certain types of bacteria (b) all viruses (c) most virus-infected cells (d) certain fungi.

Description : Lysozyme that is present in perspiration, saliva and tears, destroys (a) certain types of bacteria (b) all viruses (c) most virus-infected cells (d) certain fungi.

Last Answer : (a) certain types of bacteria

With regard to interferons: a. they are produced by B lymphocytes b. IFN-gamma is produced by cells infected with virus c. IFN-gamma increases MCH class I and II expression in antigen presenting cell d. IFN-gamma is produced by fibroblasts

Description : With regard to interferons: a. they are produced by B lymphocytes b. IFN-gamma is produced by cells infected with virus c. IFN-gamma increases MCH class I and II expression in antigen presenting cell d. IFN-gamma is produced by fibroblasts

Last Answer : IFN-gamma is produced by cells infected with virus

The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents the virus infected cells to cytotoxic T lymphocytes d. HLA genes are found on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Description : The following are true : a. the HLA proteins are found within the cytoplasm of the cells b. HLA class I antigens are expressed on all cells with nuclei c. HLA class II antigens presents ... on chromosome 6 e. HLA tissue typing is carried out in all forms of transplantation to prevent rejection

Last Answer : HLA class I antigens are expressed on all cells with nuclei

Regarding interferon: a. it is a virus specific molecules b. it acts by neutralizing exotoxin c. it enhances the histocompatibility antigen on cell surface and thereby activate the T cells d. it exerts its effect by integrating itself with the DNA of virus infected cells

Description : Regarding interferon: a. it is a virus specific molecules b. it acts by neutralizing exotoxin c. it enhances the histocompatibility antigen on cell surface and thereby activate the T cells d. it exerts its effect by integrating itself with the DNA of virus infected cells

Last Answer : it enhances the histocompatibility antigen on cell surface and thereby activate the T cells

____ becomes activated to eliminate "nonself" cells, such as virus- infected cells or cancer cells. a. Humoral immune response b. Cell-mediated immune response c. Complement d. Inflammation

Description : ____ becomes activated to eliminate "nonself" cells, such as virus- infected cells or cancer cells. a. Humoral immune response b. Cell-mediated immune response c. Complement d. Inflammation

Last Answer : b. Cell-mediated immune response

Virus infected cells produce a set of cytokine proteins called _____ that "alert" surrounding cells to the viral threat. a. Interleukin-1 (IL-1) b. Interferon. c. Toll Like Receptors (TLR) d. Acute Phase Proteins

Description : Virus infected cells produce a set of cytokine proteins called _____ that "alert" surrounding cells to the viral threat. a. Interleukin-1 (IL-1) b. Interferon. c. Toll Like Receptors (TLR) d. Acute Phase Proteins

Last Answer : b. Interferon.

A viral load test detects the A- provirus of HIV in infected cells B- .total amount of virus in the infected host C- number of viruses being released by each infected cell D- .amount of bacteriophage being produced by E. coli cells

Description : A viral load test detects the A- provirus of HIV in infected cells B- .total amount of virus in the infected host C- number of viruses being released by each infected cell D- .amount of bacteriophage being produced by E. coli cells

Last Answer : provirus of HIV in infected cells

The role of the M cell is toA- .trap virus in mucus and prevent entry B- induce apoptosis in virus-infected small intestinal epithelia cells C- pass bacteria or virus to underlying macrophages for processing and presentation of antigen D- they use their cilia to propel mucus out of the small intestine

Description : The role of the M cell is to A- .trap virus in mucus and prevent entry B- induce apoptosis in virus-infected small intestinal epithelia cells C- pass bacteria or virus to underlying macrophages for ... and presentation of antigen D- they use their cilia to propel mucus out of the small intestine

Last Answer : pass bacteria or virus to underlying macrophages for processing and presentation of antigen

Which of the following is correct for CD8 T cells? A- CD8 T cells only recognize virus-infected cells B- CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells C- In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only D- CD8 T cells can kill individual virus-infected cells in a contact dependent fashion

Description : Which of the following is correct for CD8 T cells? A- CD8 T cells only recognize virus-infected cells B- CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells ... selection only D- CD8 T cells can kill individual virus-infected cells in a contact dependent fashion

Last Answer : CD8 T cells can kill individual virus-infected cells in a contact dependent fashion

Cytotoxic T cells a) lyse cells infected with virus. Cytotoxic T cells play a role in graft rejection.

Description : Cytotoxic T cells a) lyse cells infected with virus. Cytotoxic T cells play a role in graft rejection. b) are important in producing circulating antibodies. B cells are lymphocytes important in producing ... that decrease B-cell activity to a level at which the immune system is compatible with life.

Last Answer : a) lyse cells infected with virus. Cytotoxic T cells play a role in graft rejection.

The high virus selectivity of acyclovir is due to: A. Its preferential uptake by virus infected cells B. Need of virus specific enzyme for its conversion to the active metabolite C. Its action on virus directed reverse transcriptase which does not occur in noninfected cells D. Both ‘A’ and ‘B’ are correct

Description : The high virus selectivity of acyclovir is due to: A. Its preferential uptake by virus infected cells B. Need of virus specific enzyme for its conversion to the active metabolite C. Its action on ... reverse transcriptase which does not occur in noninfected cells D. Both A' and B' are correct

Last Answer : D. Both ‘A’ and ‘B’ are correct

Interferons are produced by virus infected cells to protect healthy plants from virus infection. Identify the type of barrier it represents.

Description : 6 Interferons are produced by virus infected cells to protect healthy plants from virus infection. Identify the type of barrier it represents. a. cytokine b. physical c. cellular d. physiological

Last Answer : Ans. cytokine

my dog has just been diagnosed with a severe allergic reaction (pollen and mold prob.) My vet put her on steroids and an antibiotic for an infected area as well as smaller pink irritated areas. I want to find a holistic approach for her allergies.?

Description : my dog has just been diagnosed with a severe allergic reaction (pollen and mold prob.) My vet put her on steroids and an antibiotic for an infected area as well as smaller pink irritated areas. I want to find a holistic approach for her allergies.?

Last Answer : You can give your dog benadryl, but this is the best homeopathic remedy: http://www.squidoo.com/dogallergy

Is penicillin still administered as a antibiotic?

Description : Is penicillin still administered as a antibiotic?

Last Answer : Of course.

What was the antibiotic commonly used before the discovery of penicillin?

Description : What was the antibiotic commonly used before the discovery of penicillin?

Last Answer : Alcohol,and before that,honey.

By whom was the antibiotic penicillin first discovered? -Do You Know?

Description : By whom was the antibiotic penicillin first discovered? -Do You Know?

Last Answer : answer:

Spectinomycin is an aminoglycoside-like antibiotic indicated for the treatment of (a) Gram-negative bacillary septicemia (b) Tuberculosis (c) Penicillin-resistant gonococcal infections (d) Syphilis (e) Gram-negative meningitis due to susceptible organisms

Description : Spectinomycin is an aminoglycoside-like antibiotic indicated for the treatment of (a) Gram-negative bacillary septicemia (b) Tuberculosis (c) Penicillin-resistant gonococcal infections (d) Syphilis (e) Gram-negative meningitis due to susceptible organisms

Last Answer : Ans: C

A patient needs antibiotic treatment for native valve, culture-positive infective enterococcal endocarditis. His medical history includes a severe anaphylactic reaction to penicillin G during the past year. The best approach would be treatment with (a) Amoxicillin/clavulanate (b) Aztreonam (c) Cefazolin plus genatamicin (d) Meropenem (e) Vancomycin

Description : A patient needs antibiotic treatment for native valve, culture-positive infective enterococcal endocarditis. His medical history includes a severe anaphylactic reaction to penicillin G during the past year. ... /clavulanate (b) Aztreonam (c) Cefazolin plus genatamicin (d) Meropenem (e) Vancomycin

Last Answer : Ans: E

Penicillin is widely used as – (1) an antiseptic (2) a disinfectant (3) an antibiotic (4) an insecticide

Description : Penicillin is widely used as – (1) an antiseptic (2) a disinfectant (3) an antibiotic (4) an insecticide

Last Answer : (3) an antibiotic Explanation: Penicillin V is an antibiotic in the penicillin group of drugs. It fights bacteria in your body.

Which one of the following pairs is incorrectly matched as to antibiotic and use? a. Penicillin-gram-positive bacteria b. Nystatin-fungi c. Tetracycline-viruses d. Griseofulvin-fungi

Description : Which one of the following pairs is incorrectly matched as to antibiotic and use? a. Penicillin-gram-positive bacteria b. Nystatin-fungi c. Tetracycline-viruses d. Griseofulvin-fungi

Last Answer : c. Tetracycline-viruses

Which of the following is not an antibiotic? (A) Penicillin (B) Streptomycin (C) Tetracycline (D) Quinine

Description : Which of the following is not an antibiotic? (A) Penicillin (B) Streptomycin (C) Tetracycline (D) Quinine

Last Answer : (D) Quinine

Penicillin, an antibiotic drug was discovered by (A) Alexander (B) Flaming (C) Doctor Zhivago (D) None of these

Description : Penicillin, an antibiotic drug was discovered by (A) Alexander (B) Flaming (C) Doctor Zhivago (D) None of these

Last Answer : (A) Alexander

A patient presents with rheumatic fever and suspected allergy to penicillin. The antibiotic of choice is: A. Chloromycetin B. Sulphonamide C. Buffered penicillin D. Erythromycin could be better if is clindamycin E. Achromycin

Description : A patient presents with rheumatic fever and suspected allergy to penicillin. The antibiotic of choice is: A. Chloromycetin B. Sulphonamide C. Buffered penicillin D. Erythromycin could be better if is clindamycin E. Achromycin

Last Answer : D. Erythromycin could be better if is clindamycin

Which antibiotic administered in childhood may result in tooth discolouration: A. Penicillin B. Tetracycline C. Streptomycin

Description : Which antibiotic administered in childhood may result in tooth discolouration: A. Penicillin B. Tetracycline C. Streptomycin

Last Answer : B. Tetracycline

The following is true of vancomycin except: A. It is a bactericidal antibiotic active primarily against gram positive bacteria B. It acts by inhibiting bacterial protein synthesis C. It is an alternative to penicillin for enterococcal endocarditis D. It can cause deafness as a dose related toxicity

Description : The following is true of vancomycin except: A. It is a bactericidal antibiotic active primarily against gram positive bacteria B. It acts by inhibiting bacterial protein synthesis C. It is an alternative to penicillin for enterococcal endocarditis D. It can cause deafness as a dose related toxicity

Last Answer : B. It acts by inhibiting bacterial protein synthesis

Select the antibiotic which is equally effective whether injected 8 hourly or 24 hourly, provided the total daily dose remains the same: A. Gentamicin B. Sod. penicillin G C. Cefazolin D. Vancomycin

Description : Select the antibiotic which is equally effective whether injected 8 hourly or 24 hourly, provided the total daily dose remains the same: A. Gentamicin B. Sod. penicillin G C. Cefazolin D. Vancomycin

Last Answer : A. Gentamicin

The following statements are true about imipenem except: A. It is a β-lactam antibiotic, but neither a penicillin nor a cephalosporin B. It is rapidly degraded in the kidney C. It is safe in epileptics D. It is always given in combination with cilastatin

Description : The following statements are true about imipenem except: A. It is a β-lactam antibiotic, but neither a penicillin nor a cephalosporin B. It is rapidly degraded in the kidney C. It is safe in epileptics D. It is always given in combination with cilastatin

Last Answer : C. It is safe in epileptics

The following antibiotic accentuates the nuromuscular blockade produced by pancuronium: A. Streptomycin B. Erythromycin C. Penicillin G D. Chloramphenicol

Description : The following antibiotic accentuates the nuromuscular blockade produced by pancuronium: A. Streptomycin B. Erythromycin C. Penicillin G D. Chloramphenicol

Last Answer : A. Streptomycin

What is an antibiotic ? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) A compound synthesised by a living organism that inhibits the growth of microbes (3) A synthetic compound inhibiting the growth of other organisms (4) A synthetic compound inhibiting the growth of bacteria

Description : What is an antibiotic ? (1) A chemical compound produced by a living organism that inhibits the growth of other organisms (2) A compound synthesised by a living organism that inhibits the ... compound inhibiting the growth of other organisms (4) A synthetic compound inhibiting the growth of bacteria

Last Answer : A synthetic compound inhibiting the growth of bacteria

______ is chemical produced by fungus which inhibit the growth of other harmful microorganisms. a) antibiotic b)antibodies c)vaccine d)immunity

Description : ______ is chemical produced by fungus which inhibit the growth of other harmful microorganisms. a) antibiotic b)antibodies c)vaccine d)immunity

Last Answer : a) antibiotic

During the process of lysogeny _____. a. Phage DNA Integrates Into The Bacterial Chromosome.b. A Bacterium Acquires DNA From The External Environment. c. Competent Cells Receive Plasmids. d. New Phage Particles Are Assembled In The Host Bacterium.

Description : During the process of lysogeny _____. a. Phage DNA Integrates Into The Bacterial Chromosome. b. A Bacterium Acquires DNA From The External Environment. c. Competent Cells Receive Plasmids. d. New Phage Particles Are Assembled In The Host Bacterium.

Last Answer : a. Phage DNA Integrates Into The Bacterial Chromosome.

What is the difference between a virus and a bacterium?

Description : What is the difference between a virus and a bacterium?

Last Answer : A: A virus is smaller and can only reproduce inside a living host, while a bacterium can reproduce on its own.

What is the difference between a virus and a bacterium?

Description : What is the difference between a virus and a bacterium?

Last Answer : A: A virus is an infectious agent that consists of genetic material surrounded by a protein coat and requires a host cell to replicate, while a bacterium is a single-celled organism that can exist and reproduce independently.

What is the difference between a virus and a bacterium?

Description : What is the difference between a virus and a bacterium?

Last Answer : A: A virus is a non-living particle that requires a host cell to reproduce, while a bacterium is a single-celled organism that can reproduce on its own. Bacteria are also much larger than viruses and have a more complex cellular structure.