Gene therapy used to introduce foreign DNA into cells is done for what purpose?
What will be an ideal response?
Cure inheritable disease
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A mast cell is similar to a basophil in that both
A. are types of white blood cells. B. are vasoactive mediators. C. are agranulocytic. D. act as primary phagocytes. E. None of the choices are correct.
You have been assigned the task of identifying the cells in a plant tissue sample. Using your microscope you determine the cells are living and their cell walls vary in thickness. Upon further observation you note that the cells are arranged in strands just below the epidermal surface. What cell type do you determine the cells to be?
A. Collenchyma B. Parenchyma C. Sclerenchyma D. Sieve elements E. Tracheids Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the characteristics of plant cells as viewed through a microscope? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In a certain variety of plants, a cross between a redflowered
plant and a white-flowered plant produced an all-red flower F1. In the F2 there were 140 red, 50 cream, and 65 white. (a) Offer an explanation for this F2 ratio. (b) What ratio would be produced in a testcross of the F1 hybrid? (c) What ratio would be produced if all the white F2 plants were crossed among themselves? What will be an ideal response?
Which kind of T cell is most important in the removal of virally-infected cells from the body?
A. helper T cells B. memory T cells C. cytotoxic T cells D. suppressor T cells