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An example of development in Science and Technology that man brings about is:. Done by: C rystal Chew (2), Tan Ying Hui (9), Ryan Wee (25), Muhd Dhafer (19), Rohith Srinivas (22). P6 Victorious, Group 3. Description. Biotechnology is the use or modification of organisms or
Technology that man brings about is:
P6 Victorious, Group 3
Biotechnology is the use or modification of organisms or
their processes for human purposes, such as developing medicines or enhancing crops. In biotechnology, humans alter
biotic factors to achieve desired outcomes. Biotechnology is applied in five main ways – red, white,green, blue and black.
Humans carry out many activities to meet our needs and to
build better lives. These activities have a great impact on:
As we live, we:
Over time, this causes many environmental problems which
may be difficult to fix if left unchecked for a long time. Our
activities can completely change the ecosystem to such an
extent that nature can no longer repair the damage. Thus,
to satisfy our needs, we inadvertently sacrifice the future of
the Earth and the organisms that live on it.
Technology is good as long as it does not become out of hand, and is used responsibly and appropriately.
What is fermentation?
How is fermentation useful to organisms?
In the absence of oxygen, yeast and bacteria carry out fermentation to obtain energy for growth and respiration.
Examples of fermentation at work:
1. Farmers will harvest more crops (Better crop yield)
Explanation: GM Crops are pest-resistant, which would result in lesser crops lost to insect attacks. GM Crops can also be modified so that they produce seeds faster. This is a solution to the problem of a dwindling food supply due to a rapid increase of world population.
Example: Cotton (cottonseed oil): Pest-resistant due to Bacillus thuringiensis (Bt) crystal protein gene added/transferred to plant genome
2. Healthier food for consumers
Explanation: There will be a decrease in the usage of pesticides so the food will contain less chemicals.
3. Better working conditions for workers (farmers)
Explanation: Less exposure to harmful chemicals found in pesticides, as there is no need to use them anymore.
Pesticides can cause toxic effects, Chemical Sensitivity Syndrome and cancer.
4. More environmentally-friendly
Explanation: Less harmful chemicals such as those found in pesticides will be released into the air, as less pesticides will be needed.
5. More nutritional food
Explanation: The creation of GM foods allows the foods to contain more nutrients from the genes that are inserted into the organism.
Examples: Golden Rice - Increased iron and Vitamin A
Canola (seeds are used for producing edible oil) with oils that have lesser cholesterol
6. Better storage properties and Improved taste
Example: Flavr-Savr tomato
To develop their full flavour, tomatoes need to ripen on the vine. However, as they ripen, they become soft, making it hard to harvest and to maintain in ideal conditions for sale. Hence, farmers harvest before tomatoes are ripe and make them ripe using ethylene gas which results in the loss of flavour.
Flavour-Savour tomatoes ripen on the vine longer while maintaining firmer skin.
7. Crops are disease-resistant
8. Crops can have increased tolerance to unfavourable conditions
Explanation: Wheat, rice and maize crops that are drought-tolerant are currently being created. These crops can grow in water-deficient lands and prevent harvest shortfalls in the event of a drought. This enables more crops to be produced though in dry land.