How do interferons check infection of new cells? -Biology

How do interferons check infection of new cells? -Biology
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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

Assertion: HIV infection can be avoided by use of condoms. Reason: Condoms secrete anti-viral interferons.

Description : Assertion: HIV infection can be avoided by use of condoms. Reason: Condoms secrete anti-viral interferons.

Last Answer : Assertion: HIV infection can be avoided by use of condoms. Reason: Condoms secrete anti-viral ... If both the assertion and resson are false.

If a person shows production of interferons in his body, the chances are that he has got an infection of (a) tetanus (b) malaria (c) typhoid (d) measles.

Description : If a person shows production of interferons in his body, the chances are that he has got an infection of (a) tetanus (b) malaria (c) typhoid (d) measles.

Last Answer : (d) measles

Assertion : Interferons are a type of antibodies produced by body cells infected by bacteria. Reason : Interferons stimulate inflammation at the site

Description : Assertion : Interferons are a type of antibodies produced by body cells infected by bacteria. Reason : Interferons stimulate inflammation at the site

Last Answer : Assertion : Interferons are a type of antibodies produced by body cells infected by bacteria. Reason ... . If both the assertion and reason are false

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

An essential element of all allergy reactions is the a. Release of interferons from tissue cells. b. Accumulation of ige on the surfaces of mast cells and basophils. c. Passage of igg from the immune system to local tissue cells. d. Elimination of all traces of plasma cells from the body.

Description : An essential element of all allergy reactions is the a. Release of interferons from tissue cells. b. Accumulation of ige on the surfaces of mast cells and basophils. c. Passage of igg from the immune system to local tissue cells. d. Elimination of all traces of plasma cells from the body.

Last Answer : b. Accumulation of ige on the surfaces of mast cells and basophils.

Natural killer (NK) cells kill by secreting a. Lysozymes. b. Granzymes. c. Defensins. d. Interferons.

Description : Natural killer (NK) cells kill by secreting a. Lysozymes. b. Granzymes. c. Defensins. d. Interferons.

Last Answer : b. Granzymes.

Cancer cells interfere with cell functions in all the following ways except: a. they rob cells of their nutrients and induce cell starvation. b. they stimulate the immune system to produce destructive interferons. c. they clog the vascular network and reduce the oxygen supply to cells. d. they overwhelm cells through sheer force of numbers.

Description : Cancer cells interfere with cell functions in all the following ways except: a. they rob cells of their nutrients and induce cell starvation. b. they stimulate the immune system to produce destructive ... reduce the oxygen supply to cells. d. they overwhelm cells through sheer force of numbers.

Last Answer : b. they stimulate the immune system to produce destructive interferons.

Proteins formed when cells are exposed to viral or foreign agents that are capable of activating other components of the immune system are referred to as a) interferons. Interferons are biologic response modifiers with nonspecific viricidal proteins.

Description : Proteins formed when cells are exposed to viral or foreign agents that are capable of activating other components of the immune system are referred to as a) interferons. Interferons are biologic ... series of enzymatic proteins in the serum that, when activated, destroy bacteria and other cells.

Last Answer : a) interferons. Interferons are biologic response modifiers with nonspecific viricidal proteins.

What are interferons? -Biology

Description : What are interferons? -Biology

Last Answer : Interferons (IFNs) are proteins produced by a variety of cells in the inflammatory response to infections. Their production is triggered by the immune system in response to pathogens or cytokines. ... IFNs can play both pathological and beneficial roles in the nervous system.

Assertion : Interferons are effective against viruses. Reason : Proteins which can be synthesized only by genetic engineering are effective against vi

Description : Assertion : Interferons are effective against viruses. Reason : Proteins which can be synthesized only by genetic engineering are effective against vi

Last Answer : Assertion : Interferons are effective against viruses. Reason : Proteins which can be synthesized only ... If both the assertion and reason are false

Following mediators are involved in acute inflammation except (a) Histamine (b) Leukotrienes (c) Interferons (d) Bradykinin

Description : Following mediators are involved in acute inflammation except (a) Histamine (b) Leukotrienes (c) Interferons (d) Bradykinin

Last Answer : Ans: C

TNF-ais an example of eicosanoids (a) Interleukins (b) Cytotoxic factors (c) Interferons (d) Colony stimulating factors

Description : TNF-ais an example of eicosanoids (a) Interleukins (b) Cytotoxic factors (c) Interferons (d) Colony stimulating factors

Last Answer : Ans: B

Interferons are synthesized in response to – (1) Bacteria (2) Fungi (3) Myroplasma (4) Virus

Description : Interferons are synthesized in response to – (1) Bacteria (2) Fungi (3) Myroplasma (4) Virus

Last Answer : (4) Virus Explanation: Interferons (IFNs) are a group of signaling proteins made and released by host cells in response to the presence of pathogens, such as viruses, bacteria, parasites, ... named for their ability to "interfere" with viral replication by protecting cells from virus infections.

Interferons are synthesized in response to – (1) Bacteria (2) Fungi (3) Mycoplasma (4) Virus

Description : Interferons are synthesized in response to – (1) Bacteria (2) Fungi (3) Mycoplasma (4) Virus

Last Answer : (4) Virus Explanation: Interferons (IFNs) are a group of signaling proteins made and released by host cells in response to the presence of pathogens, such as viruses, bacteria, parasites, ... named for their ability to "interfere" with viral replication by protecting cells from virus infections.

Pathogenic bacteria secrete - (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Description : Pathogenic bacteria secrete - (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Last Answer : (1) Antigens Explanation: Pathogenic bacteria secrete various virulence factors, including toxins, lipases and pro-teases that allow them to infect, breakdown and colonize host tissue. Among ... while phospholipases cleaves and hydrolyzes the ester bonds of most phospholipids in cell membrane.

Maximum application of animal cell culture technology today is in the production of (a) insulin (b) interferons (c) vaccines (d) edible proteins.

Description : Maximum application of animal cell culture technology today is in the production of (a) insulin (b) interferons (c) vaccines (d) edible proteins.

Last Answer : (c) vaccines

The interferons are (a) antigen proteins (b) antiviral proteins (c) antibiotic proteins (d) all of these.

Description : The interferons are (a) antigen proteins (b) antiviral proteins (c) antibiotic proteins (d) all of these.

Last Answer : b) antiviral proteins

Interferons are synthesized in response to (a) mycoplasma (b) bacteria (c) viruses (d) fungi.

Description : Interferons are synthesized in response to (a) mycoplasma (b) bacteria (c) viruses (d) fungi.

Last Answer : (c) viruses

Three medications referred to as the ‘ABC drugs’ are currently the main pharmacological therapy for multiple sclerosis. Which of the following statements reflects information to be included in patient teaching? a) Flu-like symptoms can be controlled with nonsteroidal antiinflammatory drugs (NSAIDs) and usually resolve after a few months of therapy. Seventy-five percent of patients taking one of the interferons experience flu-like symptoms that can be controlled with NSAIDS and usually resolve after a few months of therapy.

Description : Three medications referred to as the ABC drugs' are currently the main pharmacological therapy for multiple sclerosis. Which of the following statements reflects information to be included in patient ... on an empty stomach. Glatiramer acetate is administed by intramuscular injection once a week.

Last Answer : a) Flu-like symptoms can be controlled with nonsteroidal antiinflammatory drugs (NSAIDs) and usually resolve after a few months of therapy. Seventy-five percent of patients taking one of the ... symptoms that can be controlled with NSAIDS and usually resolve after a few months of therapy.

Interferons are synthesized in response to (1) Bacteria (2) Fungi (3) Mycoplasma(4) Virus

Description : Interferons are synthesized in response to (1) Bacteria (2) Fungi (3) Mycoplasma(4) Virus

Last Answer : Virus

Pathogenic bacteria secrete (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Description : Pathogenic bacteria secrete (1) Antigens (2) Antibodies (3) Hormones (4) Interferons

Last Answer : Antigens

One year old is showing symptoms of ear infection is it ok to hold off until Thursday for check up?

Description : One year old is showing symptoms of ear infection is it ok to hold off until Thursday for check up?

Last Answer : Ear aches hurt! A lot! I’d get him help ASAP.

ALSO CHECK: Long-sight defect could be corrected by using ----- lens? Deficiency of vitamin B1 is causes-----? A. Rickets B. Bone Infection C. Beriberi (Answer) D. Myopia

Description : ALSO CHECK: Long-sight defect could be corrected by using ----- lens? Deficiency of vitamin B1 is causes-----? A. Rickets B. Bone Infection C. Beriberi (Answer) D. Myopia

Last Answer : C. Beriberi (Answer)

As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising a lingual flap will increases the incidence of neurapraxia but will reduce the incidence of neurotmesis with respect to the lingual nerve ADC M07 C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling D. Inferior dental nerve injury is unlikely since the nerve passes medial to the wisdom tooth root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Description : As far as surgical removal of wisdom teeth is concerned, which of the following is true?**CHECK A. Prophylactic prescription of antibiotic reduces dramatically the chances of infection B. Raising ... root E. The use of vasoconstrictors in local anaesthetics will increase the chances of infection.

Last Answer : C. Prophylactic prescription of dexamethasone will dramatically reduces post operative swelling

A large cystic ovarian tumour is detected in a woman on routine antenatal check up. The most common complication she can encounter is: a) Torsion. b) Rupture. c) Haemorrhage. d) Degeneration. e) Infection.

Description : A large cystic ovarian tumour is detected in a woman on routine antenatal check up. The most common complication she can encounter is: a) Torsion. b) Rupture. c) Haemorrhage. d) Degeneration. e) Infection.

Last Answer : a) Torsion.

What one word completes the sentence white blood cells help to defend against infection by producing antitoxins and by ingesting pathogens. they also produce _____ that help defend against infection.?

Description : What one word completes the sentence white blood cells help to defend against infection by producing antitoxins and by ingesting pathogens. they also produce _____ that help defend against infection.?

Last Answer : Antitoxins

What blood cells fight off infection?

Description : What blood cells fight off infection?

Last Answer : Need answer

What cells produce antibodies to help fight infection?

Description : What cells produce antibodies to help fight infection?

Last Answer : Need answer

How do white blood cells fight infection?

Description : How do white blood cells fight infection?

Last Answer : If an infection occurs and bacteria enters your body the white blood cells will produce antibodies to cover them and clump them together, then more white blood cells will engulf them and digest them. A ... you catch the same infection and your body also has some immunity to it.hello people of earth

The following statement(s) is/are true concerning host defense mechanisms to intraabdominal infection. a. Bacterial clearance can occur via translymphatic absorption b. Phagocytic activity and bacterial killing can occur via resident phagocytic cells and an influx of PMNs c. A fibrinogen-rich inflammatory exudate is released into the peritoneal cavity, trapping large numbers of bacteria and other particulate matter d. Perforations of a bowel may be walled off but are seldom sealed by the omentum and other mobile viscera

Description : The following statement(s) is/are true concerning host defense mechanisms to intraabdominal infection. a. Bacterial clearance can occur via translymphatic absorption b. Phagocytic activity and bacterial killing can ... may be walled off but are seldom sealed by the omentum and other mobile viscera

Last Answer : Answer: a, b, c The introduction of microorganisms into the normally sterile peritoneal environment invoke several potent specialized host antimicrobial defense mechanisms. Bacterial clearance, ... the contaminated enteric contents walled off, preventing continued soilage of the peritoneal cavity

The following statement(s) is/are true concerning HIV infection. a. Initial screening with ELISA is highly sensitive but can be associated with a false positive rate of 25% b. Treatment with azidothymidine (AZD) appears to prolong survival when administered early in the disease c. Predisposition to infection in HIV infection is primarily due to reduction in the number of helper T cells d. Common infections in patients with AIDS are Pneumocystis, carinii pneumonia, CMV pneumonitis, Cryptococcus meningitis, and disseminated infection due to atypical mycobacteria

Description : The following statement(s) is/are true concerning HIV infection. a. Initial screening with ELISA is highly sensitive but can be associated with a false positive rate of 25% b. ... , carinii pneumonia, CMV pneumonitis, Cryptococcus meningitis, and disseminated infection due to atypical mycobacteria

Last Answer : Answer: b, c, d Acquired immunodeficiency syndrome (AIDS) is a syndrome caused by the human retrovirus (HIV-1) that infects T lymphocytes and causes severe immunosuppression. Individuals who ... to prolong survival when administered early in the course of disease and is considered routine therapy

The following statement(s) is/are true concerning cellular defense mechanisms. a. Macrophages function solely as antigen processing cells in the initial reaction to exposure to an antigen b. Macrophages may become activated and secrete cytokines c. Macrophages serve as phagocytic cells in the tissues but not within the bloodstream d. Polymorphonucleocytes (PMNS) are normally present in only small numbers within the tissue and enter an area of infection through diapedesis

Description : The following statement(s) is/are true concerning cellular defense mechanisms. a. Macrophages function solely as antigen processing cells in the initial reaction to exposure to an antigen b. Macrophages ... in only small numbers within the tissue and enter an area of infection through diapedesis

Last Answer : Answer: b, d A wide variety of cell types serve to provide host defense at several levels. Macrophages act as the initial antigen processing cell that serves to ... through diapedesis after chemotactic stimuli are excluded by macrophages, bacterial breakdown products, and complement activation

Which of the following statement(s) describe the effects of aging on wound healing? a. A finer, more cosmetic scar might be expected b. In vitro studies demonstrate decreased proliferative potential of fibroblasts and epithelial cells c. Skin sutures should be left in for a longer period of time d. Wound infection occurs more frequently in elderly patients due to diminished ability to fight infection

Description : Which of the following statement(s) describe the effects of aging on wound healing? a. A finer, more cosmetic scar might be expected b. In vitro studies demonstrate decreased proliferative ... . Wound infection occurs more frequently in elderly patients due to diminished ability to fight infection

Last Answer : Answer: a, b, c There are important age-dependent aspects of wound healing. The elderly heal more slowly and with less scarring. There is a gradual attenuation of the inflammatory ... the sutures. There is no evidence to suggest that wound infections occur more commonly in elderly patients

An antibiotic is - (1) achemical synthesized by a human cell against a microorganism (2) a chemical synthesised by amicro-organism against another micro-organisms (3) a substance produced by blood cells against bacteria (4) a substance produced by blood cells against infection.

Description : An antibiotic is - (1) achemical synthesized by a human cell against a microorganism (2) a chemical synthesised by amicro-organism against another micro-organisms (3) a substance produced by blood cells against bacteria (4) a substance produced by blood cells against infection.

Last Answer : (2) a chemical synthesised by amicro-organism against another microorganisms Explanation: An antibacterial is an agent that inhibits bacterial growth or kills bacteria. The term is often used ... by a microorganism that is antagonistic to the growth of other microorganisms in high dilution.

In case of infection, following is the first line of defense B A. Antibodies B. Macrophages C. Red blood cells D. Platelets

Description : In case of infection, following is the first line of defense  B A. Antibodies B. Macrophages C. Red blood cells D. Platelets

Last Answer : Macrophages

In case of infection, following is the first line of defense B A. Antibodies B. Macrophages C. Red blood cells D. Platelet

Description : In case of infection, following is the first line of defense  B A. Antibodies B. Macrophages C. Red blood cells D. Platelet

Last Answer : Macrophages

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

Asthma may be attributed to (a) inflammation of the trachea (b) accumulation of fluid in the lungs (c) bacterial infection of the lungs (d) allergic reaction of the mast cells in the lungs.

Description : Asthma may be attributed to (a) inflammation of the trachea (b) accumulation of fluid in the lungs (c) bacterial infection of the lungs (d) allergic reaction of the mast cells in the lungs.

Last Answer : (d) allergic reaction of the mast cells in the lungs.

Guard cells help in (a) transpiration (b) guttation (c) fighting against infection (d) protection against grazing.

Description : Guard cells help in (a) transpiration (b) guttation (c) fighting against infection (d) protection against grazing.

Last Answer : (a) transpiration

Which of the following is a cause of a secondary immunodeficiency? a. X-linked inheritance b. Deficiencies in the complement system c. Viral infection resembling self-cells d. All the above are correct

Description : Which of the following is a cause of a secondary immunodeficiency? a. X-linked inheritance b. Deficiencies in the complement system c. Viral infection resembling self-cells d. All the above are correct

Last Answer : c. Viral infection resembling self-cells

Which one of the following statements about interferon is FALSE? a. Interferon is produced in response to a viral infection. b. Interferon is a naturally produced protein. c. Interferon puts uninfected cells in an antiviral stated. Interferon is a protein that binds to RNA virus genomes..

Description : Which one of the following statements about interferon is FALSE? a. Interferon is produced in response to a viral infection. b. Interferon is a naturally produced protein. c. Interferon puts uninfected cells in an antiviral state. d. Interferon is a protein that binds to RNA virus genomes.

Last Answer : d. Interferon is a protein that binds to RNA virus genomes.

The stomach is a chemical barrier to infection because the stomach a. Contains bile. b. Harbors helicobacterpylori, a member of the host microbiota. c. Possesses defensive cells. d. Has an acid ph.

Description : The stomach is a chemical barrier to infection because the stomach a. Contains bile. b. Harbors helicobacterpylori, a member of the host microbiota. c. Possesses defensive cells. d. Has an acid ph.

Last Answer : d. Has an acid ph.

A healthy person can be diagnosed as having a infection with the multiplication of bacterial cells in the blood. a. Primary; bacteremia b. Primary; vermeil c. Primary; septicemia d. Secondary; parasitemia

Description : A healthy person can be diagnosed as having a infection with the multiplication of bacterial cells in the blood. a. Primary; bacteremia b. Primary; vermeil c. Primary; septicemia d. Secondary; parasitemia

Last Answer : c. Primary; septicemia

Mononucleosis is an infection of________ cells by the _____. a. T; cytomegalovirus b. B; Epstein-Barr virus c. Lung; cytomegalovirus d. red blood; Epstein.Barr virus

Description : Mononucleosis is an infection of________ cells by the _____. a. T; cytomegalovirus b. B; Epstein-Barr virus c. Lung; cytomegalovirus d. red blood; Epstein.Barr virus

Last Answer : d. red blood; Epstein.Barr virus

Tissue tropism refers to a. what tissues grow due to a viral infection. b. what tissues are resistant to viral infection. c. what organisms a virus infects. d. what cells or tissues a virus infects.

Description : Tissue tropism refers to a. what tissues grow due to a viral infection. b. what tissues are resistant to viral infection. c. what organisms a virus infects. d. what cells or tissues a virus infects.

Last Answer : d. what cells or tissues a virus infects.

The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication

Description : The first step in infection of a host bacterial cells by a phage is A- adsorption B- absorption C- penetration D- replication

Last Answer : adsorption

Polymorphonuclear leukocytes (or PMNs) A- can be attracted to the site of an infection following activation of complement B- are derived from bone marrow stem cells C- are a type of phagocyte that can engulf and kill bacteria D- .all of the above

Description : Polymorphonuclear leukocytes (or PMNs) A- can be attracted to the site of an infection following activation of complement B- are derived from bone marrow stem cells C- are a type of phagocyte that can engulf and kill bacteria D- .all of the above

Last Answer : .all of the above

In which type of shock does the patient experiences a mismatch of blood flow to the cells? a) Distributive Distributive or vasogenic shock results from displacement of blood volume, creating a relative hypovolemia. b) Cardiogenic Cardiogenic shock results from the failure of a heart as a pump. c) Hypovolemic In hypovolemic shock, there is a decrease in the intravascular volume. d) Septic In septic shock, overwhelming infection results in a relative hypovolemia.

Description : In which type of shock does the patient experiences a mismatch of blood flow to the cells? a) Distributive Distributive or vasogenic shock results from displacement of blood volume, ... intravascular volume. d) Septic In septic shock, overwhelming infection results in a relative hypovolemia.

Last Answer : a) Distributive Distributive or vasogenic shock results from displacement of blood volume, creating a relative hypovolemia.