Bacille Calmette-Guérin (BCG) is a vaccine for tuberculosis (TB) disease. This vaccine is not widely used in the United States, but it is often given to infants and small children in other countries where TB is common. BCG does not always protect people from getting TB.
Answer:
J Solar flares disrupt radio waves and electronic communications.
Explanation:
The storms of a flare when it hits earth cause interference electric-wise high up in the earth's atmosphere, and this can cause disruptions in signals like on radios, etc.
Answer: False
Explanation:
Ticks are the external parasites which survive by feeding the blood of the birds, reptiles, amphibians and mammals. Various species of the ticks are distributed world wide. They colonize and live in the countries with warm and humid climatic conditions. The moisture help them to undergo metamorphosis. There are many species in the families of lxodidae (hard ticks) and Argasidae (soft ticks) that are active parasites and are capable of causing diseases in humans.
Answer:
This statement is best described by the option B. The recombinant DNA produced by the combination of a vector and gene of interest in the E.coli which produces multiple copies of this recombinant DNA along with the chromosomal DNA and expresses the gene.
Explanation:
In genetic engineering, the gene of interest is combined with a vector e.g. plasmid and inserted into the most suitable carrier for these recombinants. This carrier acts as the manufacturing unit for the gene of interest as it produces multiple copies when it replicates in a short period of time. E.coli is considered to be one of the best manufacturing units in the field of genetic engineering as it has a very flexible replication time.
