Answer: c)They are more expensive than potatoes without the vaccine.
A genetic engineering is a practice which is integral part of biotechnology which involves the genetic manipulation of organisms. In this the genome of organism is manipulated by incorporating the genome of the other organism, or some part of it is deleted so as to make organism resistance against diseases.
In the given situation, edible vaccines are incorporated in the potato plants, the vaccines are the chemical formulations which includes either the bacterial genome or some of it's agents which can fight against the one already present in the body causing diseases. This entire process requires an expensive technological support as a consequences of which the quality as well as price of these potatoes will be high as compared to conventionally produced potatoes.
Answer is b). They make it easier to administer edible vaccines.
Plant derived edible vaccines dependent on the stability of plant food. Potato is not eaten raw and it needs to be cooked before eating. Cooking causes denaturation or weaken the protein present in it. Edible vaccine is more effective in plant food which eaten raw such as banana. An individual get protected from diseases by simply eating a fruit.
The correct answer is: b. lightening of media in the unsealed tube only.
Explanation:
According to the question, the bacteria can undergo only aerobic respiration, that is it can produce its energy, that is, ATP, or adenosine triphosphate, only in the presence of oxygen.
The unsealed tube allowed air or oxygen to pass into it which can be used by the bacteria for its respiration. In the process, it will produce acid that will cause the media colour to lighten.
The sealed tube do not allow any oxygen to pass into it. As the given bacteria can undergo only aerobic respiration but not anaerobic respiration, in absence of oxygen it will not be able to undergo respiration and produce energy and acid. Hence, the media colour will remain unchanged.
The control tube is used to check the sterility of the media.
DNA replication is the process by which DNA makes a copy of itself during cell division. The separation of the two single strands of DNA creates a 'Y' shape called a replication 'fork'. The two separated strands will act as templates for making the new strands of DNA.
