The recipient’s serum should not contain antigens against the donor’s antibodies. The recipient’s serum should not contain the antibodies against the red blood corpuscles of the donor.

Which one of the following statements is correct with regard to the principle of safe blood transfusion 1 the donor’s red blood corpuscles should not contain antibodies against the recipient’s serum 2 the recipient’s serum should not contain antigens against the donor’s antibodies 3?

So, when RBC’s are donated, transfer of antibodies doesn’t take place. But as the RBC’s of the donor have a surface antigen, it should be ensured that recipient’s serum should not contain antibodies against the antigen on red blood corpuscles of the donor.

Which of the following statements is correct with regard to insulators?

An insulator does not allow the electric current to flow through it. Insulator offers very high resistance to the flow of electric current (charge).

Which of the statement is correct with regard to Equator?

The latitude of a place defined as the are, measured in degree, north or south of the meridian between the place and the equator. The equator is given the value of 0∘. The latitudes thus range from 0∘ at the equator to 90∘ north or south at the poles.

What is correct blood pressure?

100/55 mm Hg is considered at ideal blood pressure.

What is safe blood transfusion?

A blood transfusion is a common, safe medical procedure in which healthy blood is given to you through an intravenous (IV) line that has been inserted in one of your blood vessels.

Who discovered RHS?

Landsteiner and Wiener
The Rh factor was discovered in 1940 by Landsteiner and Wiener. 5 Rabbits were injected with the blood of the rhesus monkey (Macacus rhesus). Following a series of injections their serum clumped the red cells of the monkey, as was to be expected, but also the red cells of about 85 per cent of human beings.

How are antibodies produced?

Antibodies are produced by specialized white blood cells called B lymphocytes (or B cells). When an antigen binds to the B-cell surface, it stimulates the B cell to divide and mature into a group of identical cells called a clone.

Which of the following is true regarding insulators?

In insulators, the electrons are very tightly bound to the nucleus. At a room temperature, thermal energy is not enough to push electrons into conduction band. The energy band gap is very high. Thus the conduction band is empty and the valence band is filled with electrons.

Which one of the following can charge insulator?

Insulator can be charged by methods of friction and induction. Charge stored in this process will be static.

What is true of the equator?

The Equator is the invisible line that runs around the center of the Earth at 0 degrees latitude. An equator divides the planet into a Northern Hemisphere and a Southern Hemisphere. The Earth is widest at its Equator. The distance around the Earth at the Equator, its circumference, is 40,075 kilometers (24,901 miles).

What islands lie on the equator?

The Kiribati Islands, a remote country of 33 scattered coral atolls spread over more than 2,000 miles across the equator. It is the only country that is situated within all four hemispheres as its islands extend into the eastern and western hemispheres, as well as the northern and southern.

What is normal blood pressure of a woman?

ideal blood pressure is considered to be between 90/60mmHg and 120/80mmHg. high blood pressure is considered to be 140/90mmHg or higher. low blood pressure is considered to be 90/60mmHg or lower.

Which of the following is incorrect in high blood pressure?

Incorrect about Increase of high blood pressure is decreased resistance to the blood flow. Explanation: as a result of high blood pressure there is chances of rupture of the artery. This occurs due to extremely high pressure resulting in internal bleeding or hemorrhage in different parts of the body.

Which cells are responsible for producing antibodies?

​Lymphocyte A lymphocyte is a type of white blood cell that is part of the immune system. There are two main types of lymphocytes: B cells and T cells. The B cells produce antibodies that are used to attack invading bacteria, viruses, and toxins.

What are the 7 functions of antibodies?

Major functions of the antibodies are:

• Neutralization of infectivity,
• Phagocytosis,
• Antibody-dependent cellular cytotoxicity (ADCC),
• Complement-mediated lysis of pathogens or of infected cells: Antibodies activate the complement system to destroy bacterial cells by lysis.

What happens when two insulating materials are rubbed together?

When insulating materials rub against each other, they may become electrically charged . Electrons , which are negatively charged, may be ‘rubbed off’ one material and on to the other. The material that gains electrons becomes negatively charged. The material that loses electrons is left with a positive charge.

Which one of the following can charge an insulator?