Cellular Energy: ATP and Energy Transfer

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Questions and Answers

In which of the following scenarios is potential energy converted into kinetic energy?

A stretched rubber band held still.
A car parked on a hill.
A ball rolling down a slope. (correct)
A plant performing photosynthesis.

According to the principles of energy transformation in cells, energy can be created but not destroyed.

False (B)

What is the primary role of ATP in cellular processes?

power cellular work

The energy of motion is known as ______ energy.

kinetic Signup and view all the answers

Match the process involving ATP with its description:

ATP synthesis = Requires energy input ATP hydrolysis = Releases energy for cellular work Phosphate group transfer from ATP = Involved in chemical, transport, and mechanical work Signup and view all the answers

Which of the following processes directly involves the release of energy from ATP?

Active transport of molecules against a concentration gradient (D) Signup and view all the answers

Chemical reactions that release energy are endergonic reactions.

False (B) Signup and view all the answers

How does the height of an object above the floor influence its potential energy?

The higher, the more potential energy Signup and view all the answers

[Blank] reactions either release or store energy

chemical Signup and view all the answers

A cell performs which of the following functions?

Both of these. (B) Signup and view all the answers

Flashcards

Kinetic Energy

Energy of motion.

Potential Energy

Stored energy based on location or structure.

Chemical Reactions

Release or store energy.

ATP

Powers nearly all forms of cellular work.

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Phosphate Transfer from ATP

Involved in chemical, transport, and mechanical work.

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ATP Synthesis and Hydrolysis

ATP requires energy to synthesize and releases energy when it hydrolyzes into ADP.

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Study Notes

Energy in Cells

Cells convert energy and matter while performing work.
Kinetic energy is the energy of motion.
Potential energy is stored energy based on an object's location and structure, including chemical energy.
The higher an object is, the more potential energy it possesses.
Chemical reactions either release or store energy.
ATP fuels nearly all cellular activities, for example blinking, chewing, and moving fingers.
The transfer of a phosphate group from ATP participates in chemical, transport, and mechanical work.
ATP synthesis requires energy, while ATP hydrolysis releases energy and generates ADP.
The energy released during ATP hydrolysis is then used to synthesize more ATP, creating a cycle.