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Ghella [55]
3 years ago
5

Do you think that the plastic skin cell is living or non-living? Why?

Biology
1 answer:
dusya [7]3 years ago
4 0

Answer:

non living because its plastic

Explanation:

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Cells need energy to function, but also need to be able to heal and grow for a person to be healthy. Which of the following desc
just olya [345]

Answer:

B. Oxygen molecules recombine to allow cells to get larger

8 0
3 years ago
PLEASE ANSWER FAST THIS IS FOR A TEST!!! ILL GIVE BRAINLIEST!!!!! Based on the weather map, what weather conditions would you pr
Elden [556K]

Answer:

Easy, hot and stinky

Explanation:

lol, im just joking, to find the answer you can start by looking at colors. Hot = red and cold = blue. If you are looking for things like tornados you should look for a curve and wind mpl. Things like storms can be represented by water droplets or curves. Im sorry i cannont help you any more, the map isnt showing up, i hope you do great on your test!

8 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 reproductive cells that have half the number of chromosomes as other cells in the body are called gametes.
Lorico [155]

Answer:

falso

Explanation:

Las únicas células humanas que no contienen pares de cromosomas son las células reproductoras, o gametos, que portan solamente una copia de cada cromosoma

6 0
3 years ago
Blank and blank are two outputs of cellular respiration
hjlf
Oxygen and glucose are two outputs in the process of cellular respiration<span>.</span>
3 0
3 years ago
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