How do buffers work?
A) They accept and release OH-.
B) They accept and release H+.
C) They soak up extra acid and base.
D) They monitor the blood pH.
E) They convert H+ and OH- to water.
B
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Immunoglobulin, TCR, and MHC proteins share structural features and have evolved by duplication and selection of primordial antigen receptors
Indicate whether the statement is true or false.
The symbiotic bacteria found in the root nodules of legumes do all of the following EXCEPT:a
supply the plant with the nitrogen it needs in the form of nitrates. b. are motile bacteria. c. are Rhizobial bacteria. d. are soil-dwelling bacteria. e. digest wood.
Although MCF-10A breast cancer cells grow well on Matrigel-coated culture dishes, the cells will form cysts of polarized cells that produce milk only when
A) extra collagen is added to the Matrigel. B) extra fibronectin is added to the Matrgel. C) extra elastin is added to the Matrigel. D) the Matrigel layer is thick enough to form a 3D environment. E) the Matrigel layer is present as a very thin layer on the culture dishes.
Unattached earlobes are a dominant trait. Finn and Maggie both have unattached earlobes but their daughter, Celia, does not. If Finn and Maggie have a second child, what is the probability that this child will have attached earlobes?
A: 1 B: 1/8 C: 1/2 D: 3/4 E: 1/4