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Ivan
3 years ago
10

Plz help!! List 3 ways that scientists and engineers develop, use, and refine models

Biology
1 answer:
julia-pushkina [17]3 years ago
5 0
These are some ways how scientists and engineers develop, use and refine models.

1. Imagine. They have to know what exactly trying to model. They have to imagine and brainstorm what are the things to be considered.

2. Reason. Next, they need to answer the questions brought  from their brainstorming. They need to be able to reason out.

3. Calculate and Predict. Once they know it, that's the time they can start modelling and calculate - and predict.
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a. methylation at lysine 9 or 27 of histone H3.

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Methylation causes the switching off of genes using steric hinderance to prevent access to DNA.

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Many Japanese people consume a diet rich in seaweed, including the edible red alga Porphyra, which is used for preparing sushi.
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3 years ago
A client's exposure to an infectious microorganism has stimulated the client's immune response, including activation of effector
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releasing cytokines that will destroy the foreign cells.

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Here is the complete question

A client's exposure to an infectious microorganism has stimulated the client's immune response, including activation of effector (cytotoxic) T cells. These cells will help to eliminate pathogens by:

releasing cytokines that will destroy the foreign cells.

stimulating B cells to become more immunologically active.

releasing antibodies from within their cells membrane.

initiating the inflammatory response.

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A scientist analyzed a segment of DNA from a human chromosome and found that the percentage of cytosine molecular bases (C) was
Pachacha [2.7K]

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16%

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Adaptive immunity is based upon ________.
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