2. Objectives
● What is Coronavirus?
● Is Corona a Virus?
● How it was formed?
● When it was formed?
● What is the structure of Coronavirus?
● What cells do Coronavirus have?
● How to prevent ourselves from Coronavirus?
3. What is Coronavirus?And is Corona a Virus?
My information:
It is micro organism which is type of viruses.
It causes a disease which is called covid19.It
goes inside a human being and then straightly
goes to the nerve center of the body and then
acts like other cells but slowly it kills other cells
and make its new copies like other viruses.
And yes Corona is a Virus.
● COVID-19 is the disease caused by SARS-CoV-
2, the coronavirus that emerged in December
2019.
● COVID-19 can be severe, and has caused
millions of deaths around the world as well as
lasting health problems in some who have
survived the illness.
● The coronavirus can be spread from person to
person. It is diagnosed with a laboratory test.
4. How and when Covid19 was formed?
Health officials say it originated in a market in Wuhan, China that sold live and dead wild animals that people ate for food,
improved health and vitality and a number of other purposes. The virus has now been detected in Australia, Canada,
Finland, France, India, Italy, Japan, Nepal, Russia, Singapore, Spain, Taiwan, Thailand, Vietnam, the United States and
over a dozen other countries. And it was formed on december 2019 thats why it is know as Covid19.
5. What is the structure of Coronavirus?
The coronavirus spike protein is a multifunctional molecular machine that mediates coronavirus entry into host cells. It first
binds to a receptor on the host cell surface through its S1 subunit and then fuses viral and host membranes through its S2
subunit. Two domains in S1 from different coronaviruses recognize a variety of host receptors, leading to viral attachment.
The spike protein exists in two structurally distinct conformations, prefusion and postfusion. The transition from prefusion to
postfusion conformation of the spike protein must be triggered, leading to membrane fusion. This article reviews current
knowledge about the structures and functions of coronavirus spike proteins, illustrating how the two S1 domains recognize
different receptors and how the spike proteins are regulated to undergo conformational transitions. I further discuss the
evolution of these two critical functions of coronavirus spike proteins, receptor recognition and membrane fusion, in the
context of the corresponding functions from other viruses and host cells.
7. How to prevent ourselves from Coronavirus
1. Clean your hands often. Use soap and water, or an alcohol-based hand rub.
2. Maintain a safe distance from anyone who is coughing or sneezing.
3. Wear a mask when physical distancing is not possible.
4. Don’t touch your eyes, nose or mouth.
5. Cover your nose and mouth with your bent elbow or a tissue when you cough or sneeze.
6. Stay home if you feel unwell.
7. If you have a fever, cough and difficulty breathing, seek medical attention
