Biology 8.1 How Organisms Obtain Energy

True or False: All living organisms use energy to carry out all biological processes.

• True

• False

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The ability to do work is...

• Energy

• Thermodynamics

• Metabolism

• Cellular Respiration

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Match the following

• Need to ingest food for energy

• Autotrophs

• Make their own food

• Heterotrophs

• Heterotoph

• Grass

• Autotroph

• Horse

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This is the source of nearly all energy for life:

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True or False: Energy can be converted from one form to another and can be created and destroyed.

• True

• False

Answer explanation

Energy CANNOT be created or destroyed.

Match the following

• Conservation of Energy

• 1st Law of Thermodynamics

• Measure of usable energy

• Entropy

• 2nd Law of Thermodynamics

• Conversion of food to chemical and mechanical energy

• Entropy Increases

• 2nd Law of Thermodynamics

• 1st Law of Thermodynamics

• Food Chains

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All of the chemical reactions in a cell are referred to as what?

• ATP

• Cellular Respiration

• Energy

• Metabolism

Match the following

• Anabolic Pathways

• Most important biological molecule that provides chemical energy

• Cellular Respiration

• Anabolic Pathway

• Catabolic Pathways

• Release energy by breaking down larger molecules to smaller ones

• ATP

• Use released energy to build larger molecules from smaller ones

• Photosynthesis

• Catabolic Pathway

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Photosynthesis is the ​ (a)   in which light energy from the ​ (b)   is converted to ​ (c)   energy for use by the cell.

• anabolic pathway
• catabolic pathway
• sun
• moon
• air
• chemical
• mechanical
• thermal

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In photosynthesis, autotrophs use ​ (a)   , ​ (b)   , and ​ (c)   ​ to form ​ (d)   and ​ (e)   .

• light energy
• hydrogen
• mechanical energy
• carbon dioxide
• glucose
• oxygen
• water
• thermal energy
• chemical energy
• carbon monoxide

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