Why do living systems require energy?

Answer 1

Organisms need energy in order to live and function properly enough to find more food to eat, to reproduce and even be mobile. Energy also help maintain normal bodily functions and homeostasis. Without needed energy and thus without food, an organism will die.

Answer 2

Without energy, cells can't function. For example, ATP (chemical energy) in cells provides most of the energy to carry out the cell's needs. Without energy, cells are unable to do their jobs, thus collapsing the system.

Answer 3

In order to carry out day to day functions, e.g. walking, talking. All functions require energy.

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What is energy?

Energy is the ability to do work or to produce a change.

We need energy to do work. We need energy to walk, to breathe, to grow and to pick up things.

Plants and animals need energy to grow. Without energy, nothing would work.

Animals and plants would die. Without energy, there is no life, for all life needs energy.

Answer 4

Living systems require energy to carry out essential processes like metabolism, growth, maintenance, and reproduction. Energy is needed to drive chemical reactions, maintain structure and organization, and support movement. Without a constant supply of energy, living systems would not be able to function and eventually would perish.

Answer 5

Living cells need energy so that they have the ability to grow and repair themselves.