#Question id: 24571
#Unit 10. Ecological Principles
In which case the population eventually decline to extinction?
#Question id: 148
#Unit 1. Molecules and their Interaction Relevant to Biology
The pKa of a certain weak acid is 4.0. Calculate the ratio of proton acceptor to proton donor at pH 7.0.
#Question id: 1521
#Unit 4. Cell Communication and Cell Signaling
we examine how the deregulation of growth-promoting and growth-inhibiting signaling pathways contributes to tumorigenesis. Mutations-
A. A mutation that alters a single amino acid (valine to glutamine) in the transmembrane region of the HER2 receptor
B. A deletion that causes loss of the extracellular ligand-binding domain in the EGF receptor Results-
i. dimerization of the receptor, even in the absence of the normal EGF-related ligand, transforming it into the oncoprotein, a constitutively active kinase
ii. to constitutive activation of the kinase activity of the resulting oncoprotein
iii. no dimerization, even in the presence of the normal EGF-related ligand, repression of kinase activity
which of the following results are displayed after these mutations?
#Question id: 2472
#Unit 2. Cellular Organization
In response to a chemotactic signal, a cell forms structures to aid in locomotion. In lamellipodia, active Rac will stimulate F-actin polymerization at the leading edge via _____, whereas actin that will form stress fibers will be recruited by formin downstream of activation of this small GTPase _____.
#Question id: 27674
#Unit 1. Molecules and their Interaction Relevant to Biology
Zinc Finger Motif is characterised by