When the plant change its direction towards sunlight
This is simply a protective mechanism of the body. A person with blood group A will produced antibodies against blood group B because group B cells are considered foreign bodies to the person and will not be tolerated and vice versa. Group B people have antibodies against group A and will not tolerate group A cells. This is why group A person can only be transfused with group A blood or group O blood. Both A and B have no antibodies against blood group O. Indeed no blood group has antibodies against Blood group and this is why people with blood group O are called universal donors.
Group AB people do not have antibodies against any blood group because both these groups are part and parcel of their body and production of antibodies against either A or B would end up in self destruction of the body. Group AB people are known as universal recipients because they can receive blood from any of the other groups.
Genetic engineering often means insertion of a gene and
harvest of the protein from huge numbers of bacterial cells.
<span>Hemoglobin, are only functional as an assembly of multiple
sub-units. The ability to efficiently harvest the protein of interest and purify
it away from all the other proteins normally produced by the host cell, is one
of the major limiting factors for the large scale production of genetically
engineered hemoglobin.</span>
Answer:
False. The Northern Lights are actually the result of collisions between gaseous particles in the Earth's atmosphere with charged particles released from the sun's atmosphere.
Explanation:
Answer:
Urban development can magnify the risk of environmental hazards such as flash flooding. Pollution and physical barriers to root growth promote the loss of urban tree cover.
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