Table of contents | |
1. Structure of Antibody | |
2. Lifecycle of Retrovirus | |
3. Life-cycle of Plasmodium vivax | |
Diagram Based Questions- NEET |
Human health and sickness are really important parts of being a human. They're closely connected to how our bodies work, where we live, and how we interact with others. Being healthy isn't just about not being sick; it's about feeling good physically, mentally, and socially.
Understanding the basic structures and processes through diagrams is useful for NEET aspirants in solving questions and deeper concept clarity. some of the important diagrams of this chapter are given below.
An antibody has a Y-shaped structure with four polypeptide subunits, each containing two identical light and heavy chains.
Retroviruses, a group of viruses within the Retroviridae family, possess RNA as their genetic material. Upon infecting a cell, they undergo reverse transcription, converting their RNA into DNA.
This viral DNA integrates into the host cell's DNA, initiating replication. An example of such a retrovirus is the Human Immunodeficiency Virus (HIV).
Life Cycle of retrovirus
Plasmodium is a unicellular parasite that falls under the genus protozoans. The Plasmodium life cycle species includes development within a blood-feeding insect host, which injects parasites into a vertebrate host during a blood meal.
Q11: The infectious stage of plasmodium that enters the human body is : (NEET 2020)
(a) Female gametocytes
(b) Male gametocytes
(c) Trophozoites
(d) Sporozoites
Ans. (d)
Solution.
The life cycle of plasmodium that infects humans follows three stages:
Life Cycle of Plasmodium(i) infection of a human with sporozoites
(ii) asexual reproduction
(iii) sexual reproduction.
The two first take place exclusively in the human body, while the third one starts in the human body and is completed into the mosquito organism. The human infection begins when an infected female anopheles mosquito bites a person and injects infected with sporozoites saliva into the blood circulation i.e., the first life stage of plasmodium (stage of infection).
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1. What is the structure of an antibody? |
2. What is the lifecycle of a retrovirus? |
3. What is the life-cycle of Plasmodium vivax? |
4. How does the immune system respond to antibodies? |
5. How do antibodies provide immunity against pathogens? |
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