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Biotechnology

Description: Biotechnology (M)
Number of Questions: 15
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Tags: Biotechnology (M) Direct Variation Ratio, Proportion and Variation Number Systems Basic Numeracy Relative Speed Time and Distance
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Tissue engineering can be used to

  1. improve biological functions
  2. restore biological functions
  3. maintain biological functions
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of these

  5. None of these


Correct Option: D
Explanation:

A commonly applied definition of tissue engineering, as stated by Langer and Vacanti, is an interdisciplinary field that applies the principles of engineering and life sciences toward the development of biological substitutes that restore, maintain or improve tissue function or a whole organ.

The transgenic plant flavrsavr tomato carry an artificial gene in order to

  1. add flavour
  2. delay ripening
  3. have longer shelf life
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of these


Correct Option: D
Explanation:

Flavrsavr (also known as CGN-89564-2), a genetically modified tomato, was the first commercially grown genetically engineered food to be granted a license for human consumption.

Which of the following facts are true about stem cells?

  1. They are manufactured in a laboratory.
  2. They can reproduce any kind of tissue in the body.
  3. They are an essential part of the repair system of a body.
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of the above


Correct Option: B
Explanation:

Stem cells are biological cells found in all multi-cellular organisms that can divide (through mitosis) and differentiate into diverse specialised cell types and can self-renew to produce more stem cells. Hence, fact 1 is incorrect.

Which of the following can act as a source of adult stem cells for transplantation in humans?

  1. Bone marrow
  2. Adipose tissue
  3. Blood
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of the above

  5. None of the above


Correct Option: D
Explanation:

There are three accessible sources of autologous adult stem cells in humans:

Bone marrow, which requires extraction by harvesting, i.e. drilling into bone (typically the femur or iliac crest)

Adipose tissue (lipid cells), which requires extraction by liposuction, and
Blood, which requires extraction through pheresis, wherein blood is drawn from the donor (similar to a blood donation) and passed through a machine that extracts the stem cells and returns other portions of the blood to the donor. Stem cells can also be taken from umbilical cord blood just after birth.

Which of the following are types of human cloning?

  1. Therapeutic
  2. Replacement
  3. Reproductive
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of these

  5. None of these


Correct Option: D
Explanation:

There are three different types of artificial cloning: gene cloning, reproductive cloning and therapeutic cloning.
Gene cloning produces copies of genes or segments of DNA. Reproductive cloning produces copies of whole animals. Therapeutic cloning produces embryonic stem cells for experiments aimed at creating tissues to replace injured or diseased tissues.
 

Which of the following best describes genome?

  1. DNA sequencing of a living being

  2. Gene structure of a plant or animal

  3. The entirety of an organism’s hereditary information

  4. Genetic material of a micro-organism

  5. All of the above


Correct Option: C
Explanation:

In modern molecular biology and genetics, the genome is the entirety of an organism's hereditary information. It is encoded either in DNA or, for many types of virus, in RNA. The genome includes both the genes and the non-coding sequences of the DNA/RNA.

With which of the following would you associate the term 'regenerative medicine'?

  1. Stem cell therapy
  2. Trauma care
  3. Tissue engineering
  4. Surgery
  1. 1 and 3

  2. 2 and 3

  3. 1, 2 and 3

  4. 2, 3 and 4


Correct Option: A
Explanation:

Regenerative medicine is the "process of replacing or regenerating human cells, tissues or organs to restore or establish normal function". Widely attributed to having first been coined by William Haseltine (founder of Human Genome Sciences), the term "Regenerative Medicine" was first found in a 1992 article on hospital administration by Leland Kaiser. The term 'regenerative medicine' is often used synonymously with tissue engineering, although those involved in regenerative medicine place more emphasis on the use of stem cells to produce tissues.

After buffalo, which animal was cloned in India?

  1. Cow

  2. Bull

  3. Goat

  4. Camel


Correct Option: C
Explanation:

The world’s first Pashmina goat was cloned in Kashmir in March 2012. She has been named Noori.

What does the term ‘entox’ refer to?

  1. Study of effect of vehicular emissions on water bodies

  2. Study of effect of harmful chemicals on living organisms

  3. Study of chemical fertilizers and pesticides

  4. Study of effect of human activities on ecology

  5. none of the above


Correct Option: B
Explanation:

Environmental toxicology, also known as entox, is a multidisciplinary field of science concerned with the study of the harmful effects of various chemical, biological and physical agents on living organisms. It is a young field that has developed rapidly over the past 40 years. Environmental toxicology involves the studying of sources, pathways, transformations, and effects of chemicals that are harmful in the environment.

Where in India was the cloned buffalo named ‘Garima II’ born on 22nd August, 2010?

  1. Central Frozen Semen Production and Training Institute, Hessarghatta, Bangalore

  2. National Dairy Research Institute, Karnal, Haryana

  3. Indian Veterinary Research Institute, Izzatnagar, Bareily, UP

  4. Centre for Animal Biotechnology, SKUAST, Kashmir

  5. None of the above


Correct Option: B
Explanation:

GARIMA-II, another cloned buffalo calf, through the new and advanced ‘Hand-guided Cloning Technique’ was born at Karnal based National Dairy Research Institute under  Indian Council of Agricultural Research on Sunday (August 22, 2010). This cloned buffalo calf is different from the earlier clone calf because in this case, the used donor cell was embryonic stem cell.

What are bio-patents?

  1. Right to use biological processes
  2. Right to use biological entities
  3. Right to undertake biological inventions
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of the above


Correct Option: A
Explanation:

Patents granted in the field of biology are called as bio-patents. Patents on plants, microorganisms or any process associated with manufacture of products from microorganisms can be categorized as bio-patents.

Which of the following segments of the biotech-sector has registered the highest growth rate 2005 onwards?

  1. Bioagriculture

  2. Biopharma

  3. Bioinformatics

  4. Bioindustries


Correct Option: A
Explanation:

The order of growth rates is

Bioagriculture
Bioservices
Bioindustries
Biopharma Bioinformatics

To which of the following categories does Bt-cotton belong?

  1. Cloned plant

  2. Mutated plant

  3. Transgenic plant

  4. Hybrid plant

  5. Normal plant


Correct Option: C
Explanation:

Transgenic plants have genes inserted into them that are derived from another species. Bacillus thuringiensis (or Bt) is a Gram-positive, soil-dwelling bacterium, commonly used as a biological pesticide. The Bt-cotton variety contains a foreign gene obtained from bacillus thuringiensis. This bacterial gene, introduced genetically into the cotton seeds, protects the plants from bollworm.

Arrange the following toxicity labels, as posted on fertilizer containers in India, in decreasing order of toxicity:

  1. Red, Blue, Yellow, Green

  2. Red, Blue, Green, Yellow

  3. Red, Green, Blue, Yellow

  4. Red, Yellow, Blue, Green


Correct Option: D
Explanation:

Toxicity labels viz.; red label, yellow label, blue label and green label are mandatory labels employed on pesticide containers in India identifying the level of toxicity of the contained pesticide. The scheme follows from the Insecticides Act of 1968 and the Insecticides Rules of 1971.

Red - Extremely Toxic
Yellow - Highly Toxic
Blue - Moderately Toxic Green - Slightly Toxic

Extra-nuclear genetic material is found in

  1. mitochondria
  2. plastids
  3. golgi
  1. 1 and 2

  2. 2 and 3

  3. 1 and 3

  4. All of the above


Correct Option: A
Explanation:

Extra-nuclear genetic material is found in mitochondria and plastids.

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