List the events that occur in an allergic reaction
What will be an ideal response?
(1 ) Allergen binds to antibodies on specific B cells; (2 ) activated B cells stimulated to proliferate producing plasma cells; (3 ) plasma cells produce antibodies against the allergen, which bind to mast cells; (4 ) allergen-binding to mast cell antibodies stimulates release of histamine, which increases capillary permeability (all of which cause allergic symptoms).
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________ proteins stabilize the arrangement of the chlorophyll within a photosystem and modify the absorption spectra of specific chlorophyll molecules
Fill in the blank with correct word.
Which statement about asexual reproduction is true?
a. The advantage of asexual reproduction is that it results in new gene combinations. b. Two parents are required for successful asexual reproduction. c. The process of meiosis takes place in the parent and results in four haploid cells. d. The offspring of asexual reproduction are genetically identical to the parent. e. Asexual reproduction requires the fusion of two haploid gametes.
In a neuron at rest, there is a(n) higher concentration of sodium ions outside the cell than inside
____________________ Indicate whether the statement is true or false.
As more is learned about cancer, it has become clear that cancer, with few exceptions, ________
A) is only dependent on the inherited genetics B) is a result of genetics and environmental factors C) has no genetic basis D) is 100% dependent on inherited genetics