BIOLOGY 1 Marks Question

Find out from internet what is golden rice.

Which of the following is a term used for the specific substance whose presence is being quantitatively or qualitative analysed?

How are tobacco plants benefitted when nematode specific genes are introduced into them using certain vectors? Name the vector used.

Using _______ vectors, nematode-specific genes are introduced into host plants.

What is Chakravarthy bug? Give its scientific name and its application?

What is true about Bt toxin?

Restriction endonuclease is employed for cutting.

Mention the chemical change that proinsulin undergoes, to be able to act as mature insulin.

What is chimeric DNA?

Transgenic plants are:

The nematode that infests and damages tobacco roots:

Abnormal gene is replaced by normal genes through:

In genetics engineering which is used for transfer of genes from one cell to another.

What will happen if we use sodium nitrate excessively in the soil?

Maturation of proinsulin into insulin takes place after:

What is Bt cotton?

State the principle on which ELISA works.

How does proinsulin become mature?

What is legally wrong in the US patent law? Mention the common items of biopiracy.

Gene therapy has been successful in curing genetic diseases in laboratory animals through:

Mention the problems when we consume GM food.

Why are yeasts used extensively for functional expression of eukaryotic genes?

Why is the gene encoding for ‘Cry’ protein inserted into a crop plant?

Which is a genetically modified crop?

The first clinical gene therapy was done for the treatment of:

Suggest any two possible treatments that can be given to a patient exhibiting adenosine deaminase deficiency.

How many amino acids are arranged in the two chains of insulin?

How does dsRNA gain entry into eukaryotic cell to cause RNA interference?

Name the cry genes that control cotton bollworm and cotton borer, respectively.

What are cry genes? In which organisms are they present?

Name any one diagnostic kits based upon antigen-antibody interaction.

_______ is the compound obtained from transgenic animal that is used to treat emphysema.

The trigger for activation of toxin of Bacillus thuringiensis is:

Genetically engineered bacteria have been used in commercial production of:

Mark the odd one in the following group.
Agrobacterium, RNAi, cryIAc, Meloidegyne.

Fearing that the child to be born may have a genetic disorder, a couple goes to a doctor. Which one of the following techniques is likely to be suggested by the doctor to cure the genetic disorder?

Flavr Savr tomato is genetically modified:

In insulin molecule, which bond joins chains A and B together?

The illegal and unlawful development of biomaterials without payment to the inhabitants of their origin is called:

Which of the following country is principle patenting pirate?

How is biotechnology useful in increased insulin production to benefit needy people?

The recombinant therapeutics induce unwanted immunological responses.

Read the following and answer any four questions from (i) to (v) given below:
One approach of gene therapy to treat cystic fibrosis uses viruses to deliver normal alleles of the CFTR gene into epithelial cells of the airways. A team of researchers in the USA developed a new strain of non-pathogenic adeno-associated virus (AAV), AAV2.ST. Genes for the CFTR protein and the enzyme luciferase were inserted into the DNA of the viruses. Luciferase catalyses the production of a green fluorescent protein when luciferin is added. The normal AAV strain and the AAV2.5T strain were added to cultures of epithelial cells from the airways. After adding luciferin, the number of cells that had taken up the viral genes was estimated using the intensity of the green fluorescence which developed. The result are shown in the given graph.

1. What could be the probable reason for inserting a gene for luciferase by researchers into the viral DNA?

1. Infected cells are able to produce luciferase.
2. It is easy to identify the infected cells that have taken up viral DNA under fluorescent lamp.
3. THe non-infected cells were easily identified under fluorescent lamp as they will glow.
4. Both (a) and (b).

2. Select the incorrect statement with respect to the graph given.

1. Both AAV and AAV2.ST can infect epithelial cells.
2. Intensity of green fluorescence increases more in AAV 2.5 T as compared to normal AAV.
3. AA V infect cells more readily than AAV 2.5 T.
4. None of these.

3. The name of first transgenic cow is:

1. cDNA does not contain non-coding regions such as intrans.
2. cDNA can be transcribed and translated directly.
3. There is no need of post-trancriptional modification such as splicing, etc.
4. All of these.

4. There is a decrease in intensity of green fluorescence in cells infected with AAV 2.ST during the last 10 day. This is because:

1. Green fluorescent protein was broken down.
2. Luciferin was used up.
3. Infected cells die.
4. All of these.

5. Which of the following best describe gene therapy?

1. Mutating the sequence of a particular gene.
2. Replacing a healthy gene with a defective gene.
3. Replacing a defective gene with a functional gene.
4. Transferring a healthy gene from one species with heathy gene of other species.

Which of the following are not produced as transgenic animals?

Name the Indian variety of rice patented by an American company.

Bt toxin protein exists in which form inside bacterium?

How transgenic animals, that produce useful products, can be created?

How many polypeptide chains are present in a molecule of insulin?

How is a mature, functional insulin hormone different from its pro-hormone form?

Name the protein produced in transgenic animals that is used to treat emphysema.

The resistant variety of rice to bacterial blight is:

Which of the following is the key principle of bioethics?

_______ of human insulin is removed during maturation process.

Golden rice is:

Name the first transgenic cow.

Choose the correct option regarding Retrovirus.

What are commonly called 'mobile genetic elements?

Which of the following is the ethics for the research with animals?

State a method of cellular defense which works in all eukaryotic organisms.

State the role of C-peptide in human insulin.

Genetic engineering has been successfully used for producing.

CryIAb is introduced in a plant to control infestation by corn borer.

1. Name the resultant plant after successful insertion of the gene desired.
2. Summarise the action of the gene introduced.

Biopiracy is related to

Why is the enzyme cellulase used for isolating genetic material from plant cells but not for animal cells?