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Doctors Medicines MCQs Q&A

‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why? 1. It is used in developing gene silencing therapies. 2. It can be used in developing therapies for the treatment of cancer. 3. It can be used to develop hormone replacement therapies. 4. It can be used to produce crop plants that are resistant to viral pathogens. Select the correct answer using the code given below.

‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why? 1. It is used in developing gene silencing therapies. 2. It can be used in developing therapies for the treatment of cancer. 3. It can be used to develop hormone replacement therapies. 4. It can be used to produce crop plants that are resistant to viral pathogens. Select the correct answer using the code given below. Correct Answer 1, 2 and 4

The correct answer 1, 2 and 4.

Key Points

  • Statement 3 is absurd. Rest of them are correct.
  • RNA interference (RNAi) is a biological process in which
    RNA molecules inhibit gene expression or translation. Hence, Statement 1 is correct.
  • Since the discovery of RNAi and its regulatory potentials, it has become evident that RNAi has immense potential in
    suppression of desired genes (gene silencing). Hence, Statement 2 is correct.
  • Numerous studies have demonstrated that RNAi can provide a
    more specific approach to inhibit tumor growth by targeting
    cancer-related genes (i.e., oncogene).
  • RNAi has resulted in the invention of novel crops such as
    nicotine-free tobacco, decaffeinated coffee, nutrient fortified
    vegetation, and hypoallergenic crops. Hence, Statement 4 is correct.
  • The genetically-engineered Arctic apples received FDA approval in 2015.

Related Questions

'RNA interference (RNAi)' technology has gained popularity in the last few years. Why? 1. It is used in developing gene silencing therapies 2. It can be used in developing therapies for the treatment of cancer. 3. It can be used to develop hormone replacement therapies. 4. It can be used to produce crop plants that are resistant to viral pathogens. Select the correct answer using the code given below.
RNA interference (RNAi) technology has gained popularity in the last few years. Why?
1. It is used in developing gene silencing therapies.
2. It can be used in developing therapies for the treatment of cancer.
3. It can be used to develop hormone replacement therapies.
4. It can be used to produce crop plants that are resistant to viral pathogens.
Select the correct answer:
Consider the following statements Gene Therapy 1. Gene therapy is a medical field which focuses on the genetic modification of cells to produce a therapeutic effect. 2. CRISPR - 9 is a kind of gene therapy tool used in gene editing technology. Select the correct answer using the code given below:
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : In Japan, the incidence of stomach cancer is very high, while that of bowel cancer is very low. But Japanese immigrate to Hawaii, this is reversed - the rate of bowel cancer increases but the rate of stomach cancer is reduced in the next generation. All this is related to nutrition - the diets of Japanese in Hawaii are different than those in Japan.

Conclusions :
I. The same diet as in Hawaii should be propagated in Japan also.
II. Bowel cancer is less severe than stomach cancer.
With reference to agriculture in India, how can the technique of 'genome sequencing', often seen in the news, be used in the immediate future? 1. Genome sequencing can be used to identify genetic markers for disease resistance and drought tolerance in various crop plants. 2. This technique helps in reducing the time required to develop new varieties of crop plants. 3. It can be used to decipher the host-pathogen relationships in crops. Select the correct answer using the code given below:
Consider the following statements about Antisense RNA 1. Antisense RNA is a single stranded RNA. 2. Antisense RNA is not related to RNA interference. Which of the above statements is/are correct?
The RNAi mediated gene silencing includes the binding of siRNA to form a complex with the target gene called RISC.
Given below are two statements 1 and 2, and two conclusions I and II. Statement 1. All bacteria are microorganisms. Statement 2. All pathogens are microorganisms Conclusion I: Some pathogens are bacteria Conclusion II: All pathogens are not bacteria. Based on the above statements and conclusions, which one of the following options is logically CORRECT?
In a village 50% of the villagers produce rice, 40% of the villagers produce apples and 50% of the villagers produce vegetables, 20% of the villagers produce rice and apples both, 25% of the villagers produce apples and vegetables both, 20% of the villagers produce rice and vegetables both and 10% of the villagers produce all three. Find the percentage of villagers who do not produce anything.
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. Many farmers use synthetic pesticides to kill infesting insects. The consumption of pesticides in some of the developed countries is touching 3000 grams/hectare. Unfortunately, there are reports that these compounds possess inherent toxicities that endanger the health of the farm operators, consumers and the environment. Synthetic pesticides are generally persistent in environment. Entering in food chain they destroy the microbial diversity and cause ecological imbalance. Their indiscriminate use has resulted in development of resistance among insects to insecticides, upsetting of balance in nature and resources of treated populations. Natural pest control using the botanical pesticides is safer to the user and the environment because they break down into harmless compounds within hours or days in the presence of sunlight. Plants with pesticidal properties have been in nature for millions of years without any ill or adverse effects on the ecosystem. They are easily decomposed by many microbes common in most soils. They help in the maintenance of biological diversity of predators and human health hazards. Botanical pesticides formulated from plants are biodegradable and their use in crop protection is a practical sustainable alternative. Which of the following statements is/are correct regarding biopesticides? 1. They are not hazardous to human health. 2. They are persistent in environment. 3. They are essential to maintain the biodiversity of any ecosystem. Select the correct answer using the code given below.