Do eukaryotic cells have restriction end | Class 12 Biology Chapter Biotechnology Principles and Process, Biotechnology Principles and Process NCERT Solutions

Question: Do eukaryotic cells have restriction endonucleases? Justify your answer.

Answer:

No, eukaryotic cells do not have restriction endonucleases. This is because the DNA of eukaryotes is highly methylated by a modification enzyme, called methylase. Methylation protects the DNA from the activity of restriction enzymes .These enzymes are present in prokaryotic cells where they help prevent the invasion of DNA by virus.

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

A single base mutation in a gene may not ‘always’ result in loss or gain of function. Do you think the statement is correct? Defend your answer.

What are the physical barriers of a cell in the protoplast fusion experiment? How are the barriers overcome?

Q: Draw a labeled diagram of a Graafian Follicle?

Many microbial pathogens enter the gut of humans along with food. What are the preventive barriers to protect the body from such pathogens? What type of immunity do you observe in this case?

Q: Name the primary and secondary lymphoid organs.

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.

Q: Name the functions of the following.
(a) Corpus luteum
(b) Endometrium
(c) Acrosome
(d) Sperm tail
(e) Fimbriae

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

Q: Diagrammatically represent the experimental steps in cloning and expressing an human gene (say the gene for growth hormone) into a bacterium like E. coli ?

Q: What are transgenic bacteria? Illustrate using any one example.

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 Biotechnology Principles and Process.
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.

Notice: Undefined index: quesId in /var/www/html/ss_beta/saralstudy/ss_new/web/template/common/comment_section.php on line 3

Comments

Adriana fan
2019-11-07 19:40:00

are u tonight....i wanna cum inside u adriana

rohit ahir
2019-01-07 23:09:22

so what about apn1 isolated from yeast and topoisomarase in our DNA .so i think ans is yes ,euk... have endo.....

Dipanwita sarkar
2018-10-19 21:11:57

I am not happy with the answer.... like I am nt sure abt it

Adriana
2016-05-12 21:01:55

This is not true. Some eukaryotic organisms, for example yeasts, have restriction enzymes to protect their DNA from environmental damege. Even humans have some.

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 1 , Question 5: Do eukaryotic cells have restriction endonucleases? Justify your answer.....

Do eukaryotic cells have restriction end | Class 12 Biology Chapter Biotechnology Principles and Process, Biotechnology Principles and Process 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