Question
How HIV multiplies in the host body?
✓
Answer
HIV enters into macrophages and its RNA replicates with the host's cell DNA, so the infected cells produce virus particles and finally act as HIV factory. Now HIV enters into T-lymphocytes to replicate and thus there is a decrease in number of Helper T-cells.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Answer the following questions:
How would the following affect the phenomenon of independent assortment?
How would the following affect the phenomenon of independent assortment?
- Crossing over.
- Linkage.
Draw a neat and labelled diagram explaining Meselson’s and Stahl’s experiment.
Suggest a possible explanation why the seeds in a pea pod are arranged in a row, whereas those in tomato are scattered in the juicy pulp.
- You are given tall pea plants with yellow seeds whose genotypes are unknown. How would you find the genotype of these plants? Explain with the help of cross.
- Identify a, b and c in the table given below:
|
S. No.
|
Pattern of inheritance
|
Monohybrid $F_1$ phenotypic expression
|
|
i.
|
Co-dominance
|
a
|
|
ii.
|
b
|
The progeny resembled only one of the parents
|
|
iii.
|
Incomplete dominance
|
c
|
- What is an allergic reaction?
- Name any two drugs used to quickly reduce the symptoms of allergy.
- Why do more and more children in metro cities of India suffer from allergies and asthma?
The diagram shows human male reproductive system (one side only).
- Identify 'X' and write its location in the body.
- Name the accessory gland 'Y' and its secretion.
- Name and state the function of 'Z'.
What do you mean by fragmented habitat? Give one example.
What is apomixis and what is its importance?
Study the diagram given below:
Name the linkages X, Y, Z and the respective molecules formed by them.
Name the linkages X, Y, Z and the respective molecules formed by them.
Food chain and Food web.