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yarga [219]
3 years ago
14

Type I hypersensitivities require which of the following initial priming events to occur?

Biology
1 answer:
kherson [118]3 years ago
5 0

Answer:

Sensitization.

Explanation:

Hypersensitive reaction may be defined as the exaggerated or hyper response of the immune system. Hypersensitive reactions can occur due to auto immunity and allergies.

Type I hypersensitive reaction is mainly mediated by IgE antibodies. The sensitization towards particular stimuli like pollen grains may exaggerate the Type I hypersensitive reaction.

Thus, the correct answer is option (1).

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When NADH passes its electrons into the Electron Transport System, NADH is chemically:
erik [133]

Answer:

Option D, oxidized

Explanation:

The NADH gets oxidised when it passes its electrons into the Electron Transport System

Oxidization is a process in which one element or compound loses its electron to other chemical element or compound thereby itself getting oxidised and reducing the other one (the one who gains the electron).

Here in the electron transport system, the NADH loses or donates its electron to the Electron Transport System thus chemically it gets oxidized.

Hence, option D is correct

8 0
3 years ago
One organism benefits while the other is killed is called what?
timama [110]

Answer:

Parasitism

Explanation:

A parasite enters a body of what ever animals and makes the animal weak by eating all the protein or nutrients of the animal to the parasite. So the Parasite benfits while the Animal will be weak or die

7 0
4 years ago
The _____________ collect(s) urine from the papillae; the urine is then emptied into the ______________.
Akimi4 [234]
The collecting tubules,then into the calyces
6 0
4 years ago
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How eutrophication can change an aquatic ecosystem into a land ecosystem
timama [110]

Eutrophication is the enrichment of an ecosystem with chemical nutrients, typically compounds containing nitrogen, phosphorus, or both.

Eutrophication can be a natural process in lakes, occurring as they age through geological time.

Eutrophication was recognized as a pollution problem in European and North American lakes and reservoirs in the mid-20th century.

Human activities can accelerate the rate at which nutrients enter ecosystems.

8 0
3 years ago
Which of the following is important in accumulating and removing sand that result in shifting barrier islands?
elena55 [62]

Answer:

D. Longshore currents

Explanation:

Longshore currents are characterized as the sediment transport that occurs in the surf zone, due to the oblique incidence of the waves, along the beach. A current develops between the beach and the surf zone parallel to the coast, normally between 0.3 and 1 m / s. It is this process that is responsible for accumulating and removing sand that results in displacement of barrier islands.

5 0
3 years ago
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