Home
NCERT Soltions
Class 12
Biology
Human Health and Disease
In the given flow diagram, the replication of retrovirus in a host is ...

In the given flow diagram, the replicati | Class 12 Biology Chapter Human Health and Disease, Human Health and Disease NCERT Solutions

Question:

In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the following questions.
a. Fill in (1) and (2)
b. Why is the virus called retrovirus?
c. Can the infected cell survive while viruses are being replicated and released?

flow chart

Answer:

(a)

flow chart

(b) This virus is called as retro virus because it does not follow the central dogma of biology that shows the DNA to RNA to Proteins process. Its genetic material is transcribed to DNA by using the enzyme reverse transcriptase.

1
0
0
Report?

Report a problem on Specifications:

Email id:

Comments

< Previous Question

Next Question >

Popular questions of class 12 Biology

Q: What is spermatogenesis? Briefly describe the process of spermatogenesis.

Q: Why is reproduction essential for organisms? Answer

Q: Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals.

Q: With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.

Q: What is DNA fingerprinting? Mention its application.

Q: Describe the structure of a seminiferous tubule.

Q: What is oogenesis? Give a brief account of oogenesis.

Q: What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.

Q: With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.

Q: Explain the Law of Dominance using a monohybrid cross.

Recently Viewed Questions of Class 12 Biology

By what Latin name the first hominid was known?

A plasmid without a selectable marker was chosen as vector for cloning a gene. How does this affect the experiment?

Which of the following ecosystems will be more productive in terms of primary productivity? Justify your answer.
A young forest, a natural old forest, a shallow polluted lake, alpine meadow.

In a nucleus, the number of ribonucleoside triphosphates is 10 times the number of deoxy x10 ribonucleoside triphosphates, but only deoxy
ribonucleotides are added during the DNA replication. Suggest a mechanism.

The total number of genes in humans is far less (< 25,000) than the previous estimate (upto 1,40,000 gene). Comment.

How do we compute the age of a living tree?

Q: Give three hypotheses for explaining why tropics show greatest levels of species richness.

Given below is a figure of an ecosystem. Answer the following questions.

i. What type of ecosystem is shown in the figure.

ii. Name any plant that is characteristic of such ecosystem.

Among bryophytes, lichens and fern which one is a pioneer species in a xeric succession?

Lymph nodes are secondary lymphoid organs. Explain the role of lymph nodes in our immune response.

Study Tips for Answering NCERT Questions:

NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:

Read the question carefully and focus on the core concept being asked.
Reference examples and data from the chapter when answering questions about Human Health and Disease.
Review previous year question papers to get an idea of how such questions may be framed in exams.
Practice answering questions within the time limit to improve your speed and accuracy.
Discuss your answers with your teachers or peers to get feedback and improve your understanding.

Comments

Comment(s) on this Question

Welcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 6: In the given flow diagram, the replication of retrovirus in a host is shown. Observe and answer the ....

In the given flow diagram, the replicati | Class 12 Biology Chapter Human Health and Disease, Human Health and Disease NCERT Solutions

< Previous Question

Next Question >

Popular questions of class 12 Biology

Recently Viewed Questions of Class 12 Biology

Study Tips for Answering NCERT Questions:

Comments

Comment(s) on this Question

Chapters for Class 12 Biology

Subjects for Class 12

Students Also Read

Important links

Quick Links

Resources

Support