How many subunits make up a G protein?
A. two
B. three
C. four
D. The number is variable.
B
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The bitter receptor hTAS2R38 is activated by glucosinolates found in plants such as turnips and broccoli. The gene variant a person has determines how sensitive their neurons are to these compounds. What would you predict for people who have the high-sensitivity variant of hTAS2R38?
Unlike sweet, salty, sour, or umami, the "bitter" category of tastants includes wide structural variety of detected molecules. Multiple receptors are required to sense the different bitter tastants. What do they have in common? Bitter taste is thought to have evolved as a warning system for toxic compounds. A. They will not easily digest turnips and broccoli. B. They will have to eat more turnips and broccoli to get the same flavor. C. They will dislike turnips and broccoli. D. They will become allergic to turnips and broccoli. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about taste receptors? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Hypothermia occurs when:
a. temperature falls to the point where brain activity is impaired b. interstitial fluid begins to freeze c. shivering response begins d. breathing rate increases e. metabolic activity increases
Which gamete genotypes are expected to contribute to viable offspring when an individual is heterozygous for a pericentric inversion and crossing-over occurs as shown in the diagram? (The ? symbol represents a centromere.)(Select all that apply.)
A) ? A B C D E
B) ? A B C d a ?
C) ? a d c b e
D) e b c D E
E) ? A B C d e
F) A B C ? d a
G) e b c ? D E
H) A B C ? D E
J) a d ? c b e
__________ are cells that synthesize bone, whereas __________ break bone down. Fill in the blank(s) with the appropriate word(s)