It is necessary to match the donor's and the recipient's blood before a transfusion because the immune system will react badly if blood cells are not compatible. The immune system is responsible for patrolling or for guarding the circulation in the body. Without its proper function, the body will be exposed into different types of infections.
When blood goes through the process of transfusion, the cells are treated the same way as infections or foreign invaders. When they are not compatible with the recipient the immune system will be massively activated which can cause immediate clotting systems in the blood. The results of this clotting can lead to shock, kidney failure, collapse of the circulatory system, and worst death.
Answer: C
Explanation: Oxygen has negative ions.
Answer:
A. Puffins receive energy from herring, herring receive energy from krill, and krill receive energy from phytoplankton.
Explanation:
A food chain represents the unidirectional network or path of the flow of energy and the matter in an ecosystem.
The aquatic food chain begins from the small or microscopic organisms called phytoplankton which is autotrophic therefore are considered the producers.
The phytoplanktons are eaten by a variety of other organisms in which the krills which live in the deep sea feeds on these phytoplanktons. The krills are the primary consumers who are eaten by small fish like herring which acts as secondary consumers. These herring are then eaten by the bird-like puffins and large fish which acts as tertiary consumers.
Thus, Option-A is the correct answer.
Answer:
Distilled water is hypotonic with respect to the blood plasma of our body.
Explanation:
If distilled water is used in place of saline and injected intravenously then red blood cells of that patient"s body will start to swell as the osmotic pressure of the blood is very much greater than that of distilled water.
That"s why, to maintain homeostasis 0.9% NaCl is used as saline solution because RBC is isotonic with 0.9% NaCl solution.
Answer:
D) Replace compact fluorescent bulbs with incandescent bulbs.
Explanation: Environmental lobbying groups have labeled incandescent light bulbs as harmful not only because of the electricity they waste in producing heat but also because of the substantial amounts of carbon dioxide they emit.
