Re: CBSE Blue Print for Class 12th Biology
As per your requirement here I am uploading a pdf file having the CBSE Blue Print for Class 12th Biology. The question paper is of 70 marks and the duration is 3 hours. This is a descriptive type question paper. I have taken following questions from the attachment:
A thallasemic child needed repeated blood transfusions got infected by HIV. 3
(i) Use a rough diagrammatic sketch and arrows to show how the virus increased in number.
(ii) Why did the increased number of the HIV virus deteriorate the child’s immunity?
(iii) Which diagnostic test showed that the infective virus was HIV?
Microbes play a dual role when used for sewage treatment as they not only help to retrieve usable water but also
generate fuel. Write in points how this happens? 3
Name the particular technique in Biotechnology whose steps are shown in the figure, Use the figure to summmarise
the technique in three steps.
Here is the complete file, please click on it…
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