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TLS Online TPP Program

#Question id: 15443

The caspases have which amino acid residues in their catalytic site and what is the cleavage site of these effector proteases;

#Unit 4. Cell Communication and Cell Signaling
  1. Aspartate residue in the catalytic site and cleave proteins at sites just N-terminal to cysteine residues.
  2. Cysteine residue in the catalytic site and cleave proteins at sites just C-terminal to aspartate residues. 
  3. Glutamine residue in the catalytic site and cleave proteins at sites just C-terminal to cysteine residues.
  4. Isoleucine residue in the catalytic site and cleave proteins at sites just N-terminal to aspartate residues.
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TLS Online TPP Program

#Question id: 13139

#Unit 10. Ecological Principles

The logistic equation above is used to describe the rate of change of a population, N, with time, t, where r is the intrinsic rate of increase and K is the carrying capacity. Which of the following statements is true for this equation?
TLS Online TPP Program

#Question id: 13138

#Unit 10. Ecological Principles

Life-history characteristics associated with K-selected ordgtanisms include K
TLS Online TPP Program

#Question id: 13137

#Unit 10. Ecological Principles

Reproductive value (Vx ) calculated from population life-table data provides a measure of the 
TLS Online TPP Program

#Question id: 13136

#Unit 10. Ecological Principles

The figure below illustrates the relationship between population density in the present generation (Nt) and population equilibrium density of this population in the next generation (Nt+1). The dashed reference line has a slope of 1. Which of the following represents equilibrium density of this population?
TLS Online TPP Program

#Question id: 13134

#Unit 10. Ecological Principles

Which  of  the  graphs  below  represents the  relationship between  population  size  (N)  and  population  growth  rate (dN/dt) for a population showing exponential growth?
TLS Online TPP Program

#Question id: 13133

#Unit 10. Ecological Principles

The diagram below depicts three general types of survivorship curves. Only the form of the curve is important, not its absolute scale. Which of the following statements is LEAST likely to be true?