TLS Online TPP Program

#Question id: 422


The flow of material through a reaction pathway usually depends on ________.

#I Life Science/ Life Sciences Group – I-V
  1. control at several steps in the pathway

  2. control of the first step of the pathway

  3. covalent modification of the enzyme that catalyzes the reaction

  4. feed-forward activation

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TLS Online TPP Program

#Question id: 11418

#SCPH06 I Botany

Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island equilibrium model principles


Which island would likely have the lowest extinction rate?

TLS Online TPP Program

#Question id: 11418

#SCPH28 | Zoology

Use the following diagram of five islands formed at around the same time near a particular mainland, as well as MacArthur and Wilson's island equilibrium model principles


Which island would likely have the lowest extinction rate?

TLS Online TPP Program

#Question id: 11419

#SCPH06 I Botany

There are more species in tropical areas than in places more distant from the equator. This is probably a result of

a) more predators and parasites

b) more dispersed annual solar radiation compared to the poles

c) more frequent ecological disturbances over a longer time span

d) a longer time frame without disturbances for evolution and speciation

TLS Online TPP Program

#Question id: 11419

#SCPH28 | Zoology

There are more species in tropical areas than in places more distant from the equator. This is probably a result of

a) more predators and parasites

b) more dispersed annual solar radiation compared to the poles

c) more frequent ecological disturbances over a longer time span

d) a longer time frame without disturbances for evolution and speciation

TLS Online TPP Program

#Question id: 11420

#SCPH06 I Botany

We can represent the relationship of species richness to area with the equation


Where S = number of species, and c and z are both constants

Which of the following is not a logical explanation to relationship of species richness to area?

TLS Online TPP Program

#Question id: 11420

#SCPH28 | Zoology

We can represent the relationship of species richness to area with the equation


Where S = number of species, and c and z are both constants

Which of the following is not a logical explanation to relationship of species richness to area?