'O' blood group is considered as universal donor because it contains
- A: antigen and 'B' antibody
- A' antibody and 'B' antigen
- A' and 'B' antigens and no antibody
- no antigen but both ;A, and . 'B' antibodies
The Correct Option is D
Solution and Explanation
Top Questions on Blood
- As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $ I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below : - When one of the parents has ‘A’ blood group and the other parent has ‘O’ blood group, then their child can have _______ blood group.
- Identify the incorrect statements.
(A) Gametocytes of Plasmodium develop in the RBCs.
(B) Ascariasis pathogens are transmitted to a healthy person through the bite by female mosquito vectors.
(C) Entamoeba histolytica is a helminth parasite in the small intestine of humans, causing amoebiasis.
(D) Malarial parasite reproduces asexually in the gut of the mosquito.
(E) Filarial worms reside in the lymphatic vessels of the lower limbs.
Choose the correct answer from the options given below - A 25-year-old male presented with low hemoglobin, platelet count of 25,000/mL, gum bleeding, and raised PT & aPTT. The image of his peripheral smear is given below. What is the likely diagnosis?
- A young patient presents with a large retroperitoneal hemorrhage. He also gives a frequent history of intermittent swelling of knees on strenuous exercise. There is no history of any mucosal bleeding. Which among the following clotting factors is responsible for the condition mentioned above ?
Questions Asked in COMEDK exam
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- Two amplifiers are connected one after the other in series (cascaded). The first amplifier has a voltage gain of $10$ and the second has a voltage gain of $20$. If the input signal is $0.01\, volt$, what is the output $ac$ signal ?
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- Transistors
- Three charges $-q, +Q$ and $-q$ are placed at equal distances along a straight line. If the total $P.E.$ of the system is zero, the ratio $ \frac{Q}{q} $ becomes
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Concepts Used:
Blood
Blood is a fluid-like structure that is responsible for transporting oxygen and other nutrients to all the cells of the body. Blood shows characteristics of both tissues and fluid.
Composition of Blood:
Blood is composed of the below-mentioned parts:
- Plasma
- Blood Cells
- Platelets
Types of Blood Cells:
The two types of blood cells present in the body are:
RBC (Red Blood Cells)
RBC’s are also known as Erythrocytes. They are biconcave and are present without a nucleus in human beings. It contain Haemoglobin which is an iron-rich protein due to which the color of blood is red. RBC’s are produced in the bone marrow which is mainly responsible for the transportation of oxygen to and from various tissues and organs present in the human body.
WBC (White Blood Cells)
WBC’s are also known as Leucocytes which are colourless blood cells due to the absence of haemoglobin. They are further divided into two categories such as granulocytes and agranulocytes. Their main responsibility is to provide immunity and maintain defence mechanisms in the human body.