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TLS Online TPP Program

#Question id: 550

Which of the following statements is false?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. A reaction may not occur at a detectable rate even though it has a favorable equilibrium.

  2. After a reaction, the enzyme involved becomes available to catalyze the reaction again.

  3. For S -> P, a catalyst shifts the reaction equilibrium to the right.

  4. Lowering the temperature of a reaction will lower the reaction rate.

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TLS Online TPP Program

#Question id: 12286

#Unit 10. Ecological Principles

Keystone predators can maintain species diversity in a community if they
TLS Online TPP Program

#Question id: 12287

#Unit 10. Ecological Principles

Food chains are sometimes short because
TLS Online TPP Program

#Question id: 3296

#Unit 10. Ecological Principles

Some beetles and flies have antler-like structures on their heads, much like male deer. The existence of antlers in beetle, fly, and deer species with strong male-male competition is an example of
TLS Online TPP Program

#Question id: 12349

#Unit 10. Ecological Principles

Males in a population differ in the time they spend displaying to females. A researcher hypothesizes that predators are responsible for these differences. Males display for longer durations when there are no predators in the vicinity and for shorter durations when there is a predator nearby. Which of the following study designs is the most appropriate test of this hypothesis?
TLS Online TPP Program

#Question id: 12347

#Unit 10. Ecological Principles

A team of conservation biologists, surveying a population of frogs on an island, captured and marked 312 individuals in the first sample. In a second sampling, 3 days later, the team caught 140 individuals of which 26 were previously marked. The total number of frogs on the island is estimated to be . (Use decimal notation, not fractions or percentage)
TLS Online TPP Program

#Question id: 12346

#Unit 10. Ecological Principles

The schematic below shows the relationship between survivorship with age (relative to maximum lifespan) in Species 1 (dashed line) and Species 2 (solid line). Which of the following inferences is compatible with this figure?