Kerala SSLC Biology Chapter 7 Questions Genetics for the Future English Medium
Sslc Biology Chapter Wise Questions And Answers Question 1.
DNA fingerprinting was discovered by
a. Watson
b. Crick
c. Mendel
d. Alec Jeffrey
Answer:
d. Alec Jeffrey
Question 2.
Fill up the blanks by observing the relationship between the first pair
Molecular scissors: Restriction endonuclease
Molecular glue: ……………………….
Answer:
Ligase
Question 3.
What is the significance of human genome project?
Answer:
Even though science has progressed a lot, we couldn’t control genetic diseases. The reason for this is that we could not identify the exact gene and its location which is responsible for each trait. In 1990, the Human Genome Project was started as an attempt to solve the issue.
As a result of experiments conducted in various laboratories of the world until 2003, the secrets of human genome were revealed. With this we can identify the location of a gene in the DNA, responsible for a particular trait.
Question 4.
The stages in the production of bacteria liar are capable of producing insulin through genetic engineering is given below. Arrange them in correct order
a. Cuttiiig the plasmid of bacteria.
b. Inserting DNA in the bacterial cell.
c. Bacteria produce in active form of insulin.
d. Cutting the gene responsible for the production of insulin from human DNA.
e. Producing active insulin.
f. Providing a favourable medium for the multiplication of bacteria.
g. Joining the gene responsible for the production of insulin from human DNA to the plasmid of bacteria.
Answer:
d, a, g, b, f, e, e
Class 10 Biology Chapter 7 Question Answer Question 5.
Genetic engineering a threat to mankind. Write your opinion about this statement.
Answer:
It is criticized that genetically modified varieties cause harm to indigenous varieties and may cause health issues to humans. Application of genetically modified pathogens and pathogens multiplied ” through biotechnology upon enemies is called Bioware. This becomes a threat to the existence of human beings.
Question 6.
Bacteria is not used as a pharm animal. Write your opinion.
Answer:
Genes responsible for the production of human insulin, growth hormones, etc., are identified and inserted in animals like cow, pig, etc., transforming them into pharm animals. Bacteria were used for such experiments in the beginning. However, the culturing of bacteria is not so easy. They should be cultured with utmost care in the laboratory, It is easy to rear animals.
Question 7.
“Genetic engineering is the branch of science that transforms the living world’’.
a. What is your opinion on the above statement?
b. Give reason to substantiate your opinion.
Answer:
a. I agree with this statement. Genetic engineering is the technology of controlling traits of organisms by bringing about desirable changes in the genetic constitution of organisms.
b. Medicine – Plants and animals that produce medicines
Gene therapy – Remedy for genetic diseases
DNA fingerprinting – Forensic test
Biology Chapter 7 Class 10 Question 8.
Arrange the statements suitably in the table given below.
a. The enzyme used to cut genes
b. Ligase
c. The enzyme used for joining genes
d. Restriction endonuclease
Answer:
| Genetic scissors | Genetic glue |
| …………………….. …………………….. |
…………………….. …………………….. |
| Genetic scissors | Genetic glue |
| The enzyme used to cut genes | Ligase |
| Restriction endonuclease | The enzyme used for joining genes |
Question 9.
The stages in the production of insulin from bacteria are given below. Complete the missing stages.
Answer:
a. Cutting bacterial DNA (plasmid).
b. Then insert this DNA in the bacterial cell.
c. Bacteria produce inactive form of insulin.
Question 10.
Observe the news and answer the question given below.
DNA fingerprinting helped to identify real culprit.
Kochi: Culprit can be identified through DNA testing.
a. What is the basis of DNA testing?
b. How can culprits be identified through DNA testing.
Answer:
a. The arrangement of nucleotides in the DNA of each person differs. This finding leads to the DNA testing.
b. DNA of the skin, hair, nail, blood and other body fluids obtained from the place of murder, robbery etc. is compared with the DNA of suspected persons. Thus the real culprit can be identified from among the suspected persons through this method.
Biology Chapter 7 Question 11.
Ligase is referred as molecular glue and restriction endonuclease as molecular scissors. If these are utilized, great many achievements can be produced in the fields of agriculture and medicine.
a. What is the technology mentioned above?
b. What is the use of ligase and restriction endonuclease in this technology?
Answer:
a. Genetic engineering
b. Ligase – used for joining genes Restriction endonuclease – used for cutting of genes
Question 12.
Observe the logo given below.
a. What does it indicate?
b. What are the findings of this project?
Answer:
a. Human Genome Project.
b. Human genome has about 24000 functional genes.
- Major share of human DNA includes junk genes.
- There is only 0.2 percent difference in DNA among humans.
- About 200 genes in human genome are identical to those in bacteria.
Class 10 Biology Chapter 7 Question 13.
Given below is a word tree prepared by Appu for classroom presentation. Help him to complete the tree by choosing the words given in the box:
Junk genes, Ligase, Gene therapy, DNA profiling, Restriction endonuclease, Gene mapping, Plasmid, Genetic engineering
Answer:
a. Restriction endonuclease
b. Ligase
c. DNA profiling
d. Junk genes
e. Gene mapping
f. Gene therapy
Question 14.
Observe the table and form matching pairs.
| a. DNA profiling | i. Treatment for genetic diseases. |
| b. Gene mapping | ii. Testing the arrangement of nucleotides. |
| c. Gene therapy | iii. The sum of genetic material present in an organism |
| d. Genome | iv. Locating the position of a gene in the DNA. |
Answer:
| a. DNA profiling | i. Testing the arrangement of nucleotides. |
| b. Gene mapping | ii. Locating the position of a gene in the DNA. |
| c. Gene therapy | iii. Treatment for genetic diseases. |
| d. Genome | iv. The sum of genetic material present in an organism. |
Sslc Biology Chapter 7 Notes Pdf Question 15.
Complete the table.
| Protein required for treatment | Disease/Symptom |
| ………………a……………… | Viral diseases |
| Insulin | ………………b……………… |
| ………………c……………… | Pain |
| Somatotropin | ………………d……………… |
Answer:
| Protein required for treatment | Disease/Symptom |
| Interferons | Viral diseases |
| Insulin | Diabetes |
| Endorphin | Pain |
| Somatotropin | Growth disorders |
Kerala SSLC Biology Chapter Wise Questions and Answers