Biology Chapter on Cellular Work and Energy

Questions and Answers

What are the 3 types of cellular work driven from ATP?

Chemical, mechanical, and transport

What are the 2 types of reactions behind photosynthesis and cellular respiration?

Heat and light

What is ATP?

(Adenosine triphosphate) the main energy source that cells use for most of their work.

What is the background of ATP?

It is a cycle that is constantly recycling your cells. It drives three types of cellular work: chemical, mechanical, and transport work. It takes in energy from food and turns it into energy for working cells. It is converted to ADP by adding another phosphate. Signup and view all the answers

Give an example of chemical energy.

Building large molecules such as proteins. Signup and view all the answers

Give an example of mechanical energy.

The contraction of muscles. Signup and view all the answers

Give an example of transport work.

Pumping solutes such as ions across a cellular membrane. Signup and view all the answers

What is the equation for photosynthesis?

6CO2 + 6H2O = C6H12O6 + 6O2 Signup and view all the answers

What is the equation for cellular respiration?

C6H12O6 + 6O2 = 6CO2 + 6H2O + ATP Signup and view all the answers

Study Notes

Cellular Work Types

Three types of cellular work driven by ATP:
- Chemical work: Synthesis of large molecules, e.g., proteins
- Mechanical work: Muscle contractions
- Transport work: Movement of solutes like ions across membranes

ATP Overview

ATP (adenosine triphosphate) is the primary energy currency of cells
Continuously recycled within cells to provide energy for various functions
ATP is converted to ADP (adenosine diphosphate) by the removal of a phosphate group

Photosynthesis and Cellular Respiration

Two main types of the reactions:
- Heat reactions: Energy release without useful work
- Light reactions (related to photosynthesis): Energy conversion from sunlight

Photosynthesis Equation

Photosynthesis is summarized by the equation:
- 6CO2 + 6H2O → C6H12O6 + 6O2
Shows the conversion of carbon dioxide and water into glucose and oxygen using light energy

Cellular Respiration Equation

Cellular respiration can be represented by the equation:
- C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP
Illustrates how glucose and oxygen are used to produce carbon dioxide, water, and ATP as energy

Energy Transformation

ATP is critical in transforming energy from food into usable energy for cellular processes
Continuous cycle of ATP production and conversion maintains cellular function and energy supply

Description

This quiz covers key concepts in cellular work types driven by ATP, including chemical, mechanical, and transport work. It also addresses the processes of photosynthesis and cellular respiration, highlighting their equations and importance in energy conversion. Test your knowledge on how cells utilize energy and synthesize essential molecules.