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TLS Online TPP Program

#Question id: 2245

Which of these statements is generally true of integral membrane proteins?

#Unit 2. Cellular Organization

  1.  A hydropathy plot reveals one or more regions with a high hydropathy index.

  2.  The domains that protrude on the cytoplasmic face of the plasma membrane nearly always have covalently attached oligosaccharides.

  3. They are unusually susceptible to degradation by trypsin.

  4. They undergo constant rotational motion that moves a given domain from the outer face of a membrane to the inner face and then back to the outer.

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TLS Online TPP Program

#Question id: 24220

#Unit 1. Molecules and their Interaction Relevant to Biology

Glucagon stimulates cAMP from ATP. Cyclic AMP then activates cAMP-dependent protein kinase, phosphorylates PFK-2/FBPase-2. Phosphorylation of this protein enhances its FBPase-2 activity and inhibits its PFK-2 activity resulting
TLS Online TPP Program

#Question id: 10755

#Unit 10. Ecological Principles

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?
TLS Online TPP Program

#Question id: 13128

#Unit 10. Ecological Principles

Which point in the graph shows -Both population and per capita growth rates are positive but decelerating
TLS Online TPP Program

#Question id: 2115

#Unit 2. Cellular Organization

Which of the following statements about diffusion is true?
TLS Online TPP Program

#Question id: 526

#Unit 1. Molecules and their Interaction Relevant to Biology

Which substance causes muscles to ache during strenuous exercise?