Question

This is all on COVID 19 and viruses

1. What is/are the symptom(s) of COVID-19?

2. 		fever
   		cough
   		shortness of breath
   		all of the above

Question 2

1. What group(s) is most at risk from COVID-19? (Choose all that apply)

   		Infants
   		people 20-60
   		People 60 and older
   		People with severe health conditions.

QUESTION 3

1. A virus enters a cell to

   		get food
   		replicate DNA or RNA
   		get water
   		make a person sick

QUESTION 4

1. What are two symptoms of a severe case of COVID-19?

QUESTION 5

1. Explain how a virus infects a body cell.

QUESTION 6

1. Explain two ways that a virus can spread through a community.

QUESTION 7

1. Name four parts of a virus.

QUESTION 8

1. A virus can cause a cell to replicate to make ___________________ of new virus(es).

   		one
   		tens
   		hundreds
   		up to millions

QUESTION 9

1. What is meant by social distancing?

QUESTION 10

1. Antibiotics can kill viruses.

   True

   False

Answer 1

Q1 : All of the above

Q2 : People 60 and older, People with severe health conditions.

Q3 : Replicate DNA or RNA

Q4 : Severe symptoms of Covid-19 include Really high fever and shortness of breath which indicates pneumonia.

Q5 : A virus infects the cell by producing a protein which can bind to the receptors present outside the cell. This will in turn lead to the formation of endosomes with the viral genetic material inside which is then released to the cytoplasm of the cell. The generic material then uses the host machinery to replicated the genetic material , make proteins and assemble to form millions of viruses.

Covid-19 produces a viral protein in its capsid which binds to ACE receptor in human cells. The binding causes the virus to enter in to the cell and use our enzymes to replicate it's genetic material. Then it produces proteins and capsid components which will then assemble to produce lot of viruses. This will lead to the lysis of the infected cell and new viruses will keep on infecting the adjacent cells.

Q6 : Community spread can happen through

1. Being in proximity to an infected person when he/she coughs. ( Transmission of virus through respiratory particles)

2. Touching surfaces contaminated by the infected persons mucus or saliva and then touching eyes or nose or mouth without washing hands.

Q7 :

A viral envelope composed of lipid bilayer which has spherical particles projected outside. Embedded in the lipid bilayer are membrane proteins and spike structural proteins

A nucleocapsid is present inside the envelope which is made up of nucleocapsid proteins. Envelope and nucleocapsid protects the genetic material inside.

A Positive sense single stranded RNA molecule is present attached to the nucleocapsid.

Q8 : A virus can cause a cell to make up to millions of viruses.

Q9 : Social distancing is practicing change in social behaviours which include curtailing any kind of social contact or exposure to prevent the communal spread of the infection.

Q9 : False. Antibiotics kills bacteria not viruses.