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I am Lyosha [343]
3 years ago
5

In science, theories____?

Biology
1 answer:
forsale [732]3 years ago
7 0

Answer:

have limited explanatory power

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Im confused. I dont feel like googling it. Plz help.<br> What is cellular respiration?
Nastasia [14]

Answer: Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products.

Explanation:

5 0
3 years ago
What phase of the cell cycle are the majority of cells in?
timurjin [86]
Interphase! Most cells are in this phase and in it they copy DNA and prepare for mitosis, hope I helped
6 0
3 years ago
Explain the interaction that occurs between a t-helper lymphocyte and a b cell when the b cell is being induced to produce peanu
Paraphin [41]

Answer:

           According to Dr. Ray Schiling (member of the American Academy of Anti-aging medicine) about 1.5 million people suffer from peanut allergies. The seeds of peanut (<em>Arachis hypogea</em>) contain an array of allergens that can induce the production of IgE specific antibodies predisposed individuals. Ara1 and Ara2 are most common seed storage protein that cause allergy. Other allergen proteins such as Ara3 to Ara 17 have also been identified that cause allergy.  


Entry of peanut allergen into body

When peanut allergens enter the body of an individuals it leads to development of different symptoms like itchy skin, tingling sensation, nausea, runny nose and anaphylaxis.  

Allergic response

There are two subsets of T-cells Th1 and Th2. Both invoke different response to allergens. Th1 direct a non-allergic response while Th2 direct allergic response ranging from releasing of histamine to anaphylactic response. The presence of IL-12 cytokines direct a Th1 based, nonspecific response.  


Mechanism of allergic response (interaction between helper T cell and B cell)

Step 1.  

           When allergen enter to body they are encountered by B cells. Immunoglobulin receptors on the surface of B cells recognize antigen (Peanut allergens) and get attached, which are then internalized and processed. Within B cells the fragments of antigens combine with HLA class 2 proteins.  

Step 2

             HLA class 2 with antigen fragments (peanut allergens) then display on the surface of B cells.

Step 3

            Receptors on the surface of helper T cells recognizes the complex of HLA class 2 and antigen fragments (peanut allergen) and is activated to produce cytokines, which activate the B cells.  

Step 4

             B cell is activated by cytokines and begins clonal expansion. Some of the progeny become anti-body producing plasma cells while other become memory B cells.  


7 0
3 years ago
The client, mrs. rodrigquez, has requested a translator so that she can understand the questions that the nurse is asking during
xxTIMURxx [149]
That they can speak both languages that are required, that they have no suspicious records and/or arrests in the past, and that they work well with others.
4 0
3 years ago
Birds and strawberries benefit each other. Strawberries provide food for the birds; the birds provide a way for strawberries to
TiliK225 [7]

Answer: mutualism

Mutualism is a symbiotic relationship, between two organisms, living in close association with each other. In this relationship both the organisms gains benefit. Both organisms are dependent on each other for competing their life cycle.

The given situation is an example of mutualism because both the species are benefited for the relationship. Birds receive food from strawberries in turn birds disperse the seeds of strawberry to promote growth of more strawberry plants. Both organisms are interdependent on each other.

8 0
4 years ago
Read 2 more answers
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