Flashcards: Bioenergetics and Thermodynamics in Biology — 10 cards

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1Question

System types — examples?

Answer

Open, closed, isolated systems

2Question

Life's energy processes?

Answer

Extraction, transformation, dissipation.

3Question

ΔG — sign for spontaneous?

Answer

Negative ΔG indicates spontaneity

4Question

Open vs closed systems?

Answer

Open: matter and energy exchange.

5Question

Bioenergetics — focus?

Answer

Energy exchange, transformation, thermodynamics in biology

6Question

First law of thermodynamics?

Answer

Energy conserved; ΔU = Q + W.

7Question

Enthalpy (H)?

Answer

Heat exchange at constant pressure.

8Question

Spontaneous reaction condition?

Answer

ΔG < 0.

9Question

Entropy (S)?

Answer

Disorder measure, increases spontaneously.

10Question

Gibbs free energy (G)?

Answer

ΔG = ΔH - TΔS; reaction spontaneity.

Test yourself with the quiz

Test your knowledge with 9 questions on Bioenergetics and Thermodynamics in Biology.

1. According to the second law of thermodynamics, what is the trend of entropy in the universe?

2. What does the change in Gibbs free energy (ΔG) indicate about a biochemical reaction?

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