#Question id: 26983
#Unit 10. Ecological Principles
#Question id: 29001
#Unit 7. System Physiology – Animal
Type 2 diabetes (insulin-dependent diabetes mellitus) exhibit__
#Question id: 12102
#Unit 10. Ecological Principles
Use the following diagram of Joseph Connell's study of barnacle distribution in Scotland to answer the following two questions
Which of the following is the most logical conclusion about the distribution of the two species of barnacle, Chthamalus and Balanus?
#Question id: 12980
#Unit 10. Ecological Principles
The following questions refer to Figure which depicts the age structure of three populations.
Which population is in the process of decreasing?
#Question id: 1257
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to protein kinase A which phosphorylates multiple intracellular target proteins expressed in different cell types.
A. Inactive PKA is a tetramer consisting of two regulatory (R) subunits and two catalytic (C) subunits.
B. Each R subunit contains a pseudo-substrate domain whose sequence resembles that of a peptide substrate and binds to the active site in the catalytic domain but is not phosphorylated; thus the pseudo-substrate domain inhibits the activity of the catalytic subunits.
C. active PKA is turned off by binding of cAMP Each R subunit has two distinct cAMP-binding sites, called CNB-A and CNB-B.
D. Binding of cAMP by an R subunit of PKA occurs in a cooperative fashion; that is, binding of the first cAMP molecule to CNB-B increases the Kd for binding of the second cAMP to CNB-A. Thus small changes in the level of cytosolic cAMP can cause proportionately large changes in the number of dissociated C subunits and, hence, in cellular kinase activity.
Which of the following statements are incorrect?