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Energy in Living Cells: Lecture 1

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Questions and Answers

What is the primary function of energy in living organisms?

To facilitate the growth of cells
To generate heat from the sun's energy
To enable living things to carry out various processes (correct)
To convert kinetic energy into potential energy

What is the ultimate source of energy for living organisms?

Muscular contractions
The Sun (correct)
Fossil fuels
Food

What is the characteristic of energy according to the Laws of Thermodynamics?

Energy can only be converted from kinetic to potential energy
Energy can only be generated from fossil fuels
Energy can be created or destroyed
Energy can be transformed from one form to another (correct)

What is the type of energy stored in food?

Potential energy (D) Signup and view all the answers

What happens to the energy captured by plants?

It is given off as heat (C) Signup and view all the answers

What is the study of energy transformations known as?

Thermodynamics (A) Signup and view all the answers

What is the major drawback of energy conversions in living systems?

There is a loss of usable energy as heat (A) Signup and view all the answers

What is the primary function of energy input in living systems?

To maintain order and organization (C) Signup and view all the answers

What is a characteristic of organized and usable energy forms?

Low entropy (C) Signup and view all the answers

What is the primary difference between potential energy and kinetic energy?

One is stored and the other is in motion (D) Signup and view all the answers

What is the ultimate consequence of energy conversions in the universe?

The universe becomes less organized and more disordered (C) Signup and view all the answers

What is the percentage of energy that is typically converted into usable energy in cellular processes?

40% (B) Signup and view all the answers

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