Prelecture #5

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The first law of thermodynamics states that?

Energy cannot be created or destroyed

Which step of cellular respiration occurs outside the mitochondria?

Glycolysis

The capture and use of energy by living organisms involves numerous chemical reactions. Collectively these processes are known as

Metabolism

During exercise, the increase in respiration rate and heartbeat speed are driven by need to replenish the oxygen used to support?

Oxidative phosphorylation in muscle cell mitochondria

The evolution of photosynthesis was an essential event for the evolution of life as we know it. Defend this statement by discussing the importance of the products of photosynthesis.

Photosynthesis produces oxygen, which allows other organisms to conduct cellular respiration rather than fermentation. This allows these organisms to produce much more ATP. Photosynthesis also produces sugars, which are used as an energy source by other organisms.

In the reaction C6H12O6+6O2-->6CO2+6H2O, the 6 CO2 molecules are some of the?

Products

In photosynthesis, the carbon used to make sugars is?

Provided by carbon dioxide

Carbon dioxide is one product of a metabolic process, which occurs in both plants and animals. The process is called?

Respiration

Photosynthesis organisms capture energy from sunlight and convert it into chemical bonds by forming?

Sugars

What is the role of water in photosynthesis?

Water provides electrons to chlorophyll


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