Tag: zoology

Questions Related to zoology

A person was saved from poisonous snake bite by antivenom injection . Which of the following immunity explain this form of protection ?

zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

  1. Naturally acquired active immunity

  2. Artificially acquired active immunity

  3. Naturally acquired passive immunity

  4. Artificially acquire passive immunity

Show answer
Correct Option: D
Explanation:

Artificially acquired passive immunity explains this form of protection. When performed antibodies are directly injected into the body, it is known as artificial passive immunity. It provides the quick immune response. In case of snake bites, the injection which is given to the patients, contain performed antibodies against snake venom. This type of immunisation is passive immunisation.

Passive actively acquired immunity can be activated by all except.

zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

  1. Attenuated microorganism

  2. Through hyper immune serum

  3. Through convalescent serum

  4. Through pooled gamma-globulin

Show answer
Correct Option: A
Read the passage and answer the following question.

The genes that code for the human leukocyte antigen(HLA) antigens, also known as the major histocompatibility complex(MHC) genes, are all located on human chromosome $6$. Two brothers and a sister participated in a bone marrow donor registration, and their HLA typing results are given.


ID HLA-A HLA-B HLA-C HLA-DR
$1$ A$1$, A$3$ B$5$, B$7$ C$3$, Cw$19$ DR$3$, DR$9$
$2$ A$1$, A$6$ B$2$, B$6$ C$2$, C$16$ DR$4$, DR$13$
$3$ A$1$, A$6$ B$2$, B$6$ C$2$, C$16$ DR$4$, DR$13$


What is your explanation for the single HLA-A result for sibling $3$?

zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

  1. A gene-deletion event occured during crossing over

  2. Nondisjunction occurred during meiosis

  3. A laboratory error caused the lost data; it should have a second result

  4. A metabolic error prevented the synthesis of the second antigen

  5. Both the parents were heterozygous for HLA-A$1$

Show answer
Correct Option: E
Explanation:

HLA is inherited as a "set" of the three HLA groups, A, B, DR known as halotype. In given halotype of sibling 3, all four HLAs (HLA-A, B , C and DR) are different refecting the heterozygosity of two parents for the same. The sibling has HLA of two types: A1 and A6 i.e. one parent have HLA-A1 and other has HLA-A6. Both parents are heterozygous for HLA-A. Thus, the correct answer is option E.

Read the passage and answer the following question.
Many mammalian cell membrane receptors associated with the immune system contain repetitive structures known as the immunoglobulin fold. Receptors containing even one of these folds are considered members of the immunoglobulin superfamily. 
Which of the following explains this common feature in different molecules?
zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

  1. All of the genes that produce these proteins used to be part of a much larger gene that fragmented in the past

  2. All of the genes in question are retrotransposons

  3. Most of the genes in question are introns that experienced mutations that removed the splice sequence

  4. The fold was so successful as a signaling molecule that it encouraged its propagation

  5. The fold is repetitive because of gene duplication

Show answer
Correct Option: E
Explanation:

Repetitive gene products are produced by gene duplication. A duplicated gene produces the same protein in multiple repeats. Retrotransposons can amplify themselves but are not necessarily present in multiple copies at the same chromosomal location. Introns are noncoding sequences. Proteins are encoded by genes only; they are not a product of encouraged propagation caused by relative success in the functioning. So, the correct answer is option E.

Read the passage and answer the following question.

The genes that code for the human leukocyte antigen(HLA) antigens, also known as the major histocompatibility complex(MHC) genes, are all located on human chromosome $6$. Two brothers and a sister participated in a bone marrow donor registration, and their HLA typing results are given.


ID HLA-A HLA-B HLA-C HLA-DR
$1$ A$1$, A$3$ B$5$, B$7$ C$3$, Cw$19$ DR$3$, DR$9$
$2$ A$1$, A$6$ B$2$, B$6$ C$2$, C$16$ DR$4$, DR$13$
$3$ A$1$, A$6$ B$2$, B$6$ C$2$, C$16$ DR$4$, DR$13$


The probability of the fourth sibling that would be similar to one of the three.

zoology aids to health immunity and the lines of immunity immune system of the body immunity and blood groups

  1. $25$ percent

  2. $100$ percent

  3. $0$ percent

  4. $50$ percent

  5. $75$ percent

Show answer
Correct Option: E

BCG vaccination is to be given to a new born child

zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody

  1. Immediately after birth

  2. Within 48 hours

  3. Within seven days

  4. Within six months

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Correct Option: A

A disease against which vaccination is resorted only during epidemics.

zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody

  1. Diarrhoeal diseases

  2. Tetanus

  3. Cholera

  4. Taeniasis

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Correct Option: A

Vaccines are generally administered to _________

zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody

  1. Children

  2. Youngsters

  3. Elderly people

  4. It can be administered in all aged people

Show answer
Correct Option: A
Explanation:

Vaccines are generally administered in children. When a disease carrying microbe enters our body, the body produces antibodies to fight the invader. The body also remembers how to fight the microbe if it enters again. The antibodies remain in the body and we are protected from the disease causing microbes.

Which disease has been eradicated from most part of the world due to worldwide vaccine campaign ?

zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody

  1. Malaria

  2. Tetanus

  3. Small pox

  4. AIDS

Show answer
Correct Option: C
Explanation:

A worldwide campaign against smallpox has finally led to its eradication from most parts of the world.The other campaign are against polio,cholera,tuberculosis also led in most part of the world.

Variolation consisted of

zoology diseases and immunity antibodies antibodies and antitoxin antigen and antibody

  1. Injecting viriolous matter

  2. Injecting heat-killed viriolous matter

  3. Scratching an area over a vein and pour small matter from a small pox pustule

  4. Scratching vein and pouring viriolous matter into blood

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Correct Option: C