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TLS Online TPP Program

#Question id: 522

Yeast will normally convert pyruvate to ethanol. Why is this better for the yeast than a conversion to lactate?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Conversion to ethanol releases more NAD+ per mole than the conversion to lactate.

  2. The carbon atoms are more oxidized in ethanol than in lactate.

  3. Ethanol is neutral, but lactate production is accompanied by a sharp decrease in pH.

  4. Ethanol production is not better. Yeast normally produces ethanol and lactate in equilmolar amounts.

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TLS Online TPP Program

#Question id: 9173

#Unit 9. Diversity of Life Forms

Use the following figure to answer the question below


In the figure, which number would designate the arctic tundra biome?
TLS Online TPP Program

#Question id: 5017

#Unit 11. Evolution and Behavior

Arrange these events from earliest to most recent.

1.  emission of lava in what is now Siberia at time of Permian extinctions

2.  emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3.  emission of lava that solidified at the same time as rusted iron precipitated from seawater

4.  emission of lava in what is now India at time of Cretaceous extinctions
TLS Online TPP Program

#Question id: 11065

#Unit 7. System Physiology – Animal

A liquid-ventilated lung compared to a gas-ventilated lung
TLS Online TPP Program

#Question id: 27493

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is not the property of Reducing sugar
TLS Online TPP Program

#Question id: 10998

#Unit 7. System Physiology – Animal

When does the second heart sound occur in the ventricular pressure–volume relationship?