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Recent questions in Biology in Human Welfare

Questions >> JEEMAIN and NEET >> Biology >> Biology in Human Welfare

Biology in Human Welfare

Human Health and Disease

Strategies for Enhancement in Food Production

Microbes in Humal Welfare

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Veins which carry blood to organs other than heart are called portal system.}\\\text{Reason:Hepatic portal system is present in all vertebrates and have 2 or 3 portal systems.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Bird's four chambered heart is superior to the four charbered heart of crocodiles .}\\\text{Reason:Crocodilian heart has both systemic arches joining resulting in mixing of blood in dorsal aorta.Avian heart has lost systemic arch.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The S-A node acts as a pacemaker.}\\\text{Reason:The S-A node is located in the wall of the right atruim near the interatrial septun.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The stem cells of bone marrow have lymphocytes and these occur in the blood,lymph and connective tissues.}\\\text{Reason:Lymphocytes migrate to bursal lymphoid tissue or to thymus and differentiate into B or T-cells.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:An adipose layer is absent under the skin of piokilothermic animals.}\\\text{Reason:These animals use fat in metabolism during hibernation.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Veins have valve which open away from the heart.}\\\text{Reason:Veins distribute blood to the various parts.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Prothrombin is essential for blood clotting.}\\\text{Reason:Prothrombin is synthesized in the liver in the presence of }Ca^{++}.\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Peyer's patches represent an endocrine tissue.}\\\text{Reason:Peyer's patches are located on the epithelium of colon.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Lymph capillaries are free and blind at one end.}\\\text{Reason:Lymph doe not flow in a circular manner.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Mild fever strengthens the defence mechanism of the body.}\\\text{Reason:High temperature is harmful and should be brought down by giving antipyretics and by applying cold packs.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Frequent vaginal douches should be avoided.}\\\text{Reason:Lactobacilli normally present in the ****** change glycogen of the broken off cells into lactic acid that kills foreign bacteria.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Lymphocytes arise in the bone marrow and differentiate in the bursal lymphoid tissues or in the thymus into B-cells and T-cells.}\\\text{Reason:B-cells and T-cells are prepared for providing humoral and cell-mediated immunity.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Aids spreads by contact between the blood of an infected person and a healthy person.}\\\text{Reason:Aids manifests as tumours or as pathogen infection.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Second infection of the same pathogen is quickly eliminated.}\\\text{Reason:Performed memory B-and T-cells mount a quick and vigorous attack on pathogens re-entering the body.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Interferons help eliminate viral infections..}\\\text{Reason:Interferons released cells reach the nearly uninfected cells and make them resistant to viral infection.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Phagocytes capture and digest microbes.}\\\text{Reason:Killer T-cells approach the body cells covered with viruses and destroy such cells before viruses can enter and multiply to spread infection .}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Macrophages occur only in the connective tissue.}\\\text{Reason:Role of neutrophils is different from that of macrophages.}\end{array}$

asked Jul 11, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Macrophages are multipurpose cells of the body's defence mechanism.}\\\text{Reason:They carry on phagocytosis,display the antigens of the engulfed microbes to the lymphocytes and secrete interleukin-I.}\end{array}$

asked Jul 10, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Allergic persons are less likely to develop tumours than the others.}\\\text{Reason:Allergies do not run in families.}\end{array}$

asked Jul 10, 2014 by sreemathi.v

1 answer

Antiviral substances are

asked Jul 10, 2014 by sreemathi.v

1 answer

Viruses cannot be cultured in any artificial medium because they

asked Jul 10, 2014 by sreemathi.v

1 answer

The major phagocytic cells are

asked Jul 10, 2014 by sreemathi.v

1 answer

James phipps is associated with a viral disease of which has been fully eliminated from the world.It is

asked Jul 10, 2014 by sreemathi.v

1 answer

On stimulation by a foreign antigen in the body,the T-lymphocytes produce by division a clone of T-cells called

asked Jul 10, 2014 by sreemathi.v

1 answer

HIV attacks the

asked Jul 10, 2014 by sreemathi.v

1 answer

In allergy,inflammatory response is caused by the release of

asked Jul 10, 2014 by sreemathi.v

1 answer

Passive immunity is defined as immunity

asked Jul 10, 2014 by sreemathi.v

1 answer

Which of the following diseases is due to an alergic reaction?

asked Jul 10, 2014 by sreemathi.v

1 answer

Antiserum contains

asked Jul 10, 2014 by sreemathi.v

1 answer

HIV has a protein coat and a genetic material which is

asked Jul 10, 2014 by sreemathi.v

1 answer

An autoimmune disease is

asked Jul 10, 2014 by sreemathi.v

1 answer

Antibodies are

asked Jul 10, 2014 by sreemathi.v

1 answer

AIDS is transmitted through

asked Jul 10, 2014 by sreemathi.v

1 answer

Interferon acts against

asked Jul 10, 2014 by sreemathi.v

1 answer

Tissue affinity and portal of entry determine

asked Jul 10, 2014 by sreemathi.v

1 answer

Inflammatory response in allergy is due to release by mast cells of

asked Jul 10, 2014 by sreemathi.v

1 answer

A molecule that produces an immune response is

asked Jul 10, 2014 by sreemathi.v

1 answer

Hormone produced in allergic reaction is

asked Jul 10, 2014 by sreemathi.v

1 answer

A person has developed interferon in his body,he seems to carry infection of

asked Jul 10, 2014 by sreemathi.v

1 answer

Type of immunoglobulin present in colostrum is

asked Jul 10, 2014 by sreemathi.v

1 answer

Cornea transplantation has become common due to

asked Jul 10, 2014 by sreemathi.v

1 answer

Antibody production is assisted by

asked Jul 10, 2014 by sreemathi.v

1 answer

Antigens are found

asked Jul 10, 2014 by sreemathi.v

1 answer

What is induced in (polio) vaccination

asked Jul 10, 2014 by sreemathi.v

1 answer

A kind of all allery as

asked Jul 10, 2014 by sreemathi.v

1 answer

A compound formed in an organism for inhibiting growth of another organism is

asked Jul 10, 2014 by sreemathi.v

1 answer

Antibody

asked Jul 10, 2014 by sreemathi.v

1 answer

Antiserum has

asked Jul 10, 2014 by sreemathi.v

1 answer

Suspension of attenuated pathogen that stimulated antibody formation is

asked Jul 10, 2014 by sreemathi.v

1 answer

A noninfectious unnatural and unusual reaction to a substance or condition is

asked Jul 10, 2014 by sreemathi.v

1 answer

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