Blood Group

Q.

Why is blood group. O called the universal donor?

Q.

ABO blood grouping system is based on the

1. surface lipids present on the cell membrane
2. nature of all constituents
3. nature of RBC and WBC
4. surface antigen present on the RBCs

Q.

In blood, antigens are present on _____ and antibodies are present in _____.

1. Plasma, RBCs

2. RBCs, Plasma

3. WBCs, Plasma

4. RBCs, WBCs

Q.

Why do people have different skin tones?

Q.

The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because “O” in it refers to having

1. One antibody only ­either anti-­A or anti­-B on the RBCs

2. Overdominance of this type on the genes for A and B types

3. Other antigens besides A and B on RBCs

4. No antigens A and B on RBCs

Q. Which blood group is called "Universal donor"?

1. B
2. AB
3. A
4. O

Q.

With respect to ABO blood groups, how many genotypes and phenotypes respectively are possible in the population of human beings?

1. 6 and 4

2. 4 and 6

3. 4 and 4

4. 6 and 6

Q.

Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.

1. When I^A and I^B are present together, they express the same type of sugar.

2. Allele ‘i’ does not produce any sugar

3. The gene (I) has three alleles.

4. A person will have only two of the three alleles.

Q.

Explain the function of lymph with reference to

1.Absorption of fats

2.Defence mechanism

Also explain what are lymphatics with reference to absorption of fats.

Q.

A person with blood group AB is considered as a universal recipient because he/she has ____

1. Both A and B antigens in the plasma but no antibodies.

2. Both A and B antigens on RBC but no antibodies in the plasma.

3. Both A and B antibodies in the plasma.

4. No antigen on RBC and no antibody in the plasma.

Q.

Which of the following statements is incorrect?

1. Blood group is designated on the basis of the presence of antibodies in the blood plasma

2. A person of ‘B’ blood group can’t donate blood to a person of ‘A’ blood group

3. A person of ‘O’ blood group has anti ‘A’ and anti ‘B’ antibodies in his blood plasma

4. A person of AB blood group is universal recipient

Q. A person with 'AB' blood group is sometimes called a universal recipient because of the

1. Lack of antigen in his blood.
2. Lack of antibodies in his blood.
3. Lack of both antigens and antibodies in his blood.
4. Presensce of antibodies in his blood.

Q. ABO blood groups in humans are controlled by the gene I. It has three alleles-$I^A$, $I^B$ and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

1. Four
2. Two
3. Three
4. One

Q. According to my textbook , blood group O negative is the rarest blood group but according to Google , blood group A B negative is the rarest. Which one is correct? please explain.

Q. How many possible phenotypes are there for ABO blood groups?

1. 4
2. 8
3. 6
4. 16

Q.

Is blood group genetic?

Q. The blood group which is the universal acceptor is __(i)__ and the one that is universal donor is __(ii)____.

1. (i) AB+, (ii) O-
2. (i)A+, (ii)B-
3. (i) O-, (ii) AB+
4. (i) O-, (ii)A+

Q. The blood corpuscles are of _________ types.

1. 5
2. 4
3. 2
4. 3

Q. If the blood group of both the parents is $O^{+ve}$, the probable blood group of the child is

1. $O^{+ve}$
2. $O^{-ve}$
3. $O^{+ve}$ and $O^{-ve}$
4. AB or O

Q.

Can blood group change?

Q. Person with blood group AB is considered as universal recipient because he has

1. None of the above.
2. Both A and B antigens on RBC but no antibodies in the plasma.
3. No antigen on RBC and no antibody in the plasma.
4. Both A and B antibodies in the plasma.

Q. AB blood group was discovered by

1. Decastello and Sturli
2. Wallace Alfred
3. Karl Landsteiner
4. William Harvey

Q. Riya has an A positive blood type, she wants to donate her blood. She can donate blood to the person with which of the following blood type?

1. A negative
2. B positive
3. O negative
4. AB positive
5. AB negative

Q. A person with 'O' blood group has both antibodies A and B. So consider a situation in which a person with blood group 'O' donates his blood to a person with blood group 'A'. So that antibody A of blood group 'O' should react with antigen A of blood group 'A', so this should lead to coagulation of blood, but this isn't taking place, why?

Q. A man with A blood group marries a woman with B blood group and both show the presence of homozygous alleles. The possible genotypes of the offsprings would be

1. II only
2. I, II, III and IV
3. I, II and IV
4. I and II
5. IV only

Q. ABO blood groups in humans are controlled by the gene I. There are six different genotype and four different phenotype in human population. What is the ratio of allele in sperm and population ?

1. 1 : 1
2. 1 : 3
3. 1 : 2
4. 3 : 1

Q. A person with blood group 'A' can donate blood to the persons with blood group 'AB' because it

1. Has both 'A' and 'B' antigens
2. Has only 'A' antigen and 'B' antibodies
3. Does not have any antigens and antibodies
4. Has only 'B' antigen and 'A' antibodies

Q. Universal donor and universal acceptor is

1. O$-$ and AB$+$
2. O$+$ and AB$-$
3. O$+$ and AB$+$
4. O$-$ and AB$-$

Q. Assertion : Reason: Blood group AB has no antibody and thus antigen of other group is not affected.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. In human blood group AB,

1. Antibodies are present
2. Antibody 'a' is present
3. Antibody 'b' is present
4. Antibodies are absent