P 53 gene: (A) A proto-oncogene (B) An oncogene (C) A tumour suppressor gene (D) None of these

P 53 gene: (A) A proto-oncogene (B) An oncogene (C) A tumour suppressor gene (D) None of these
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RB 1 gene is (A) A tumour suppressor gene (B) Oncogene (C) Proto-oncogene (D) Activated proto-oncogene

Description : RB 1 gene is (A) A tumour suppressor gene (B) Oncogene (C) Proto-oncogene (D) Activated proto-oncogene

Last Answer : Answer : A

Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Description : Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Last Answer : Answer : D

Ras proto-oncogene is converted into oncogene by (A) A point mutation (B) Chromosomal translocation (C) Insertion of a viral promoter upstream of the gene (D) Gene amplification

Description : Ras proto-oncogene is converted into oncogene by (A) A point mutation (B) Chromosomal translocation (C) Insertion of a viral promoter upstream of the gene (D) Gene amplification

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True statements about p53 include: a. a protein coded by a tumour suppressor gene b. it suppresses mitosis c. it is important regulators of apoptosis d. all above

Description : True statements about p53 include: a. a protein coded by a tumour suppressor gene b. it suppresses mitosis c. it is important regulators of apoptosis d. all above

Last Answer : all above

Ras proto-oncogene encodes (A) Epidermal growth factor (EGF) (B) Receptor for EGF (C) Signal transducer for EGF (D) Nuclear transcription factor

Description : Ras proto-oncogene encodes (A) Epidermal growth factor (EGF) (B) Receptor for EGF (C) Signal transducer for EGF (D) Nuclear transcription factor

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Binding of growth hormone to its receptor results in increased transcription of (A) c-fos gene (B) c-myc gene (C) p-53 gene (D) None of these

Description : Binding of growth hormone to its receptor results in increased transcription of (A) c-fos gene (B) c-myc gene (C) p-53 gene (D) None of these

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In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell proliferation? For example, many cancer cells carry two mutant copies of the gene that codes for a tumor suppressor protein named p53. What is the normal function of p53 that is lost when it is mutated?

Description : In many types of cancer, proteins that are crucial regulators of the cell cycle are often mutated and cannot function correctly. This leads to the evasion of apoptosis and to the loss of control of cell ... protein named p53. What is the normal function of p53 that is lost when it is mutated?

Last Answer : Normally, p53 senses DNA damage and acts as a transcription factor for checkpoint control genes.

Suppressor tRNAs can neutralize the effects of mutations in (A) Structural genes (B) Promoter regions (C) Enhancer elements(D) All of these

Description : Suppressor tRNAs can neutralize the effects of mutations in (A) Structural genes (B) Promoter regions (C) Enhancer elements(D) All of these

Last Answer : Answer : A

Suppressor mutations occur in (A) Structural genes (B) Promoter regions (C) Silencer elements (D) Anticodons of tRNA

Description : Suppressor mutations occur in (A) Structural genes (B) Promoter regions (C) Silencer elements (D) Anticodons of tRNA

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A synthetic nucleotide analogue, used in organ transplantation as a suppressor of immunologic rejection of grafts is (A) Theophylline (B) Cytarabine (C) 4-Hydroxypyrazolopyrimidine (D) 6-Mercaptopurine

Description : A synthetic nucleotide analogue, used in organ transplantation as a suppressor of immunologic rejection of grafts is (A) Theophylline (B) Cytarabine (C) 4-Hydroxypyrazolopyrimidine (D) 6-Mercaptopurine

Last Answer : Answer : D

CD 4 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : CD 4 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : A

CD 8 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : CD 8 is a transmembrane glycoprotein present in (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : C

MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : MHC Class II proteins, in conjunction with antigens, are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : B

MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : MHC class I proteins, in conjunction with antigens are recognised by (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : A

The most abundant T cells are (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Description : The most abundant T cells are (A) Cytotoxic T cells (B) Helper T cells (C) Suppressor T cells (D) Memory T cells

Last Answer : Answer : B

Proto-oncogens are present in (A) Oncoviruses (B) Cancer cells (C) Healthy human cells (D) Prokaryotes

Description : Proto-oncogens are present in (A) Oncoviruses (B) Cancer cells (C) Healthy human cells (D) Prokaryotes

Last Answer : Answer : C

Diabetes mellitus can occur due to all of the following except (A) Deficient insulin secretion (B) Tumour of β−cells (C) Decrease in number of insulin receptors (D) Formation of insulin antibodies

Description : Diabetes mellitus can occur due to all of the following except (A) Deficient insulin secretion (B) Tumour of β−cells (C) Decrease in number of insulin receptors (D) Formation of insulin antibodies

Last Answer : Answer : B

In Cushing’s syndrome-a tumour associated disease of adrenal cortex, there is (A) Decreased epinephrine production (B) Excessive cortisol production (C) Excessive epinephrine production (D) Decreased cortsoil production

Description : In Cushing’s syndrome-a tumour associated disease of adrenal cortex, there is (A) Decreased epinephrine production (B) Excessive cortisol production (C) Excessive epinephrine production (D) Decreased cortsoil production

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Description : B.M.R. is subnormal in (A) Addison’s disease (B) Adrenal tumour (C) Cushing’s syndrome (D) Fever

Last Answer : Answer : A

Helper T cells release all the following except (A) Interleukins (B) Colony stimulating factors (C) Perforins (D) Tumour necrosis factor

Description : Helper T cells release all the following except (A) Interleukins (B) Colony stimulating factors (C) Perforins (D) Tumour necrosis factor

Last Answer : Answer : C

Helper T cells release (A) Interleukins (B) Colony stimulating factors (C) Tumour necrosis factor (D) All of these

Description : Helper T cells release (A) Interleukins (B) Colony stimulating factors (C) Tumour necrosis factor (D) All of these

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Cytotoxic T cells release (A) Perforins (B) Interleukins (C) Colony stimulating factors (D) Tumour necrosis factor

Description : Cytotoxic T cells release (A) Perforins (B) Interleukins (C) Colony stimulating factors (D) Tumour necrosis factor

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What are the enzymes useful as tumour markers?

Description : What are the enzymes useful as tumour markers?

Last Answer : Regan iso-enzyme of ALP for lung tumour; tartarate labile iso-enzyme of ACP and Prostate specific antigen (PSA) for prostate carcinoma; Neuron specific enolase (NSE) for cancers of neuro-endocrine origin.

Why do oncogene acts as though it is stuck in the on position?

Description : Why do oncogene acts as though it is stuck in the on position?

Last Answer : Feel Free to Answer

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Last Answer : Answer: a, c, e A particularly important group of novel chemotactic cytokines has been elucidated over the last decade. Twelve are known and are listed below. C-X-C ... in vivo cytokine networks involving these molecules which regulate chemotaxis, and other fundamental aspects of inflammation

Rivers' postulates can be used toa. locate an oncogene in a cell that is cancerous. b. develop inactivated viruses for use in a vaccine. c. eliminate viruses with certain chemical agents. d. relate a particular virus to a particular disease.

Description : Rivers' postulates can be used to a. locate an oncogene in a cell that is cancerous. b. develop inactivated viruses for use in a vaccine. c. eliminate viruses with certain chemical agents. d. relate a particular virus to a particular disease.

Last Answer : d. relate a particular virus to a particular disease.

The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.

Description : The oncogene theory states that transforming genes a. Normally Occur In The Host Genome. b. Can Exist In Viruses. c. Are Not Of Viral Origin. d. All Of The Above (A—C) Are Correct.

Last Answer : d. All Of The Above (A—C) Are Correct

For which disease is Oncogene responsible?

Description : For which disease is Oncogene responsible?

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Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

Description : Harmonic suppressor connected to an antenna. A. High pass filter B. Low pass filter C. Tank circuit D. M-derived filter

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Echo suppressor is detrimental to full duplex operation because (A) It disables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair. (B) It enables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair. (C) It activates both the pairs of a four-wire trunk line. (D) It is independent of line conditions.

Description : Echo suppressor is detrimental to full duplex operation because (A) It disables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair. (B) It enables one of the ... It activates both the pairs of a four-wire trunk line. (D) It is independent of line conditions.

Last Answer : (A) It disables one of the two pairs in a four-wire trunk line when a signal is detected on the other pair.

The suppressor grid is added to a tetrode to reduce what undesirable characteristic of tetrode operation?

Description : The suppressor grid is added to a tetrode to reduce what undesirable characteristic of tetrode operation?

Last Answer : Secondary emission.

What are the three elements of a bipolar transistor? Are they the: w) grid, plate, cathode x) suppressor, deflector, target y) energizer, controller, terminus z) emitter, base, collector

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The gene of lac operon which has constitutive expression is (A) i (B) c (C) z (D) p

Description : The gene of lac operon which has constitutive expression is (A) i (B) c (C) z (D) p

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Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme activity (B) Glucose-6-P Dehydroglucose deficiency leads to disfuction of many tissues (C) G-6-p Dehydroglucose deficiency is due to a single deletion of a large sequence of DNA in the G-6-PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Description : Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme ... PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Last Answer : Answer : A

Mention any four features of the proto - industrial system. -SST 10th

Description : Mention any four features of the proto - industrial system. -SST 10th

Last Answer : (i) Impact on cottagers and peasants : After the disappearing of open field system cottagers and poor peasants who had earlier depended on common lands for their survival, gathering their firewood, ... goods were no: produced in factories by the cotta cottagers and Hie peasants and their families.

The proto-industrialisation helped in building a close relationship between the town and the countryside”. -SST 10th

Description : The proto-industrialisation helped in building a close relationship between the town and the countryside”. -SST 10th

Last Answer : (i) Merchants were based in towns but the work was done mostly in the countryside by the peasant households. (ii) A merchant clothier in England purchased wool from a wool stapler, and ... ) The finishing was done in London before the export merchant sold the cloth in the international market.

What is proto-industrialisation ? -SST 10th

Description : What is proto-industrialisation ? -SST 10th

Last Answer : Proto-industrialisation is the phase of industrialisation that was not based on the factory system. Before the coming of factories, there was large-scale industrial production for an international market. This part of industrial history is known as proto-industrialisation.

How was proto-industrialisation different from factory production ? -SST 10th

Description : How was proto-industrialisation different from factory production ? -SST 10th

Last Answer : Proto-industrialisation was a decentralised method of production which was controlled by merchants and the goods were produced by a vast number of producers located in different places whereas under ... became centralised. Most of the processes were brought together under one roof and management.

What is meant by proto-industrialisation ? How did it affect the rural peasants and artisans ? -SST 10th

Description : What is meant by proto-industrialisation ? How did it affect the rural peasants and artisans ? -SST 10th

Last Answer : It was the phase of industrialisation before the Industrial Revolution, where there was large- scale industrial production for an international market which was not factory based. Impact: (i) Full ... income from cultivation. It also allowed them a fuller use of their family labour resources.

What were the benefits enjoyed by the villagers in the proto- industrial system. -SST 10th

Description : What were the benefits enjoyed by the villagers in the proto- industrial system. -SST 10th

Last Answer : As common agricultural land was disappearing, the villagers and poor peasants, who had earlier depended on common lands for their survival, had to look for alternative sources of income. The ... their family labour resources, as all the members of the family could work for these merchants.

In what ways the proto-industrial production helped the poor farmers in countryside? -SST 10th

Description : In what ways the proto-industrial production helped the poor farmers in countryside? -SST 10th

Last Answer : Following are the ways from which the proto-industrial production helped the poor farmers in countryside: 1.In the countryside poor peasants and artisans began looking for merchants ... proto-industrialisation supplemented their shrinking income from cultivation and raised their standard of living.

How was cloth manufactured in England during the proto-industrial period? -SST 10th

Description : How was cloth manufactured in England during the proto-industrial period? -SST 10th

Last Answer : . Merchants were based in towns but the work was done mostly in the countryside. . A merchant clothier in England purchased wool from a wool stapler. . From there, it was carried to the ... The finishing was done in London before the export merchant sold the cloth in the international market.

Explain what is meant by proto-industrialization. -SST 10th

Description : Explain what is meant by proto-industrialization. -SST 10th

Last Answer : Even before factories began to be set up in England and Europe, there was large-scale industrial production for an international market. This period was referred to as proto - industrialization ... historians because this is the phase of industrialization that was not based on the factory system.

What is meant by proto-industrialisation ? -SST 10th

Description : What is meant by proto-industrialisation ? -SST 10th

Last Answer : Proto-industrialisation refers to first or early form of industrialisation. Even before the factories came up in England and Europe, there was large-scale industrial production for an international ... , regulated competition and prices and restricted the entry of new people into the trade.

Describe the nexus of merchants and cotton textile producers in proto-industry. -SST 10th

Description : Describe the nexus of merchants and cotton textile producers in proto-industry. -SST 10th

Last Answer : In the proto-industrial stage, cotton was produced in the following ways: (i) Merchant clothier bought wool from stapler, the person who sorted wool according to its fibres. (ii) ... town and countryside developed in which a network of commercial exchange existed between merchants and farmers.

Explain the main features of proto-industrialisation. -SST 10th

Description : Explain the main features of proto-industrialisation. -SST 10th

Last Answer : Proto-industrialisation refers to a phase of industrialisation which was not based on factories. Even before factories began to appear, there was large-scale industrial production for international ... workers were employed by each merchant, with each clothier thus controlling hundreds of workers.

What is meant by proto-industrialization? -SST 10th

Description : What is meant by proto-industrialization? -SST 10th

Last Answer : Proto-industrialization was the early phase of industrialization in Europe and England when there was large scale industrial production for an international market. This was not based on factories. It was ... commons due to enclosure movement. (ii) They now looked for alternative source of income.

What was ‘proto-industrialization’? -SST 10th

Description : What was ‘proto-industrialization’? -SST 10th

Last Answer : Proto-industrialization refers to the system of industries that existed in Europe before the arrival of modern machine run factories. Large scale industrial production took place for an international ... (iv) They got a source of income which supplemented their shrinking income from cultivation.