The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.

The morphological variation shown by Achillea lanulosa illustrates

TLS Online TPP Program

#Question id: 28927

#Unit 4. Cell Communication and Cell Signaling

Cytosolic destruction complex of hedgehog signalling is bound to a microtubule by the__

TLS Online TPP Program

#Question id: 28928

#Unit 4. Cell Communication and Cell Signaling

In the cytosolic destruction complex, Ci becomes phosphorylated in a series of steps catalyzed by kinases which is?

TLS Online TPP Program

#Question id: 28929

#Unit 4. Cell Communication and Cell Signaling

In the cytosolic destruction complex, Ci becomes phosphorylated and is proteolytically cleaved by the ubiquitin-proteasome pathway, generating an N-terminal fragment Ci75, which functions as___

TLS Online TPP Program

#Question id: 28930

#Unit 4. Cell Communication and Cell Signaling

Hedgehog (Hh) presence causes__ 

a) binds to Smo, causing Smo to be endocytosed from the cell surface and degraded

b) binds to Ptc, causing Ptc to be endocytosed from the cell surface and degraded

c) degraded Ptc and relieving the inhibition of Smo

d) degraded Smo and relieving the inhibition of Ptc

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#Question id: 28931

#Unit 4. Cell Communication and Cell Signaling

Which of the following activity dissociates Fu-Cos2-Ci complex?

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#Question id: 31014

#Unit 4. Cell Communication and Cell Signaling

If the insulin concentration rises fivefold to 2.5 × 10⁻¹¹ M, as it does after a meal, and the Kd for binding of insulin to its receptor on liver cells, 1.4 × 10⁻¹⁰ M (0.14 nM). What fraction of insulin receptors with bound insulin?