Unit 4 - Matter & Energy Study Guide

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What are the reactants and products of cellular respiration?

the reactants—glucose (sugar) and oxygen—combine together to form new products: carbon dioxide molecules and water molecules

Describe the role of photosynthesis and cell respiration in the cycling of carbon.

Photosynthesis converts carbon dioxide and water into oxygen and glucose

Describe the relationship between photosynthesis and cell respiration?

Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.

What are the reactants and products of photosynthesis?

carbon dioxide and water (the reactants) into glucose and oxygen (the products).

What cell organelle is involved in photosynthesis?

the chloroplast

Does cell respiration occur in plant cells, animal cells or both?

Both

Describe what happens during the process of photosynthesis?

During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose.

Does photosynthesis occur in plant cells, animal cells or both?

Just plant cells.

Describe what happens during the process of cell respiration?

a glucose molecule is gradually broken down into carbon dioxide and water

What are the products of alcoholic fermentation?

carbon dioxide and ethanol

What are the products of lactic acid fermentation?

carbon dioxide and lactic and acetic acids

How do organisms generate energy when oxygen is not available?

fermentation releases energy from food molecules by producing ATP

Where do organisms get energy?

food, nutrients, or sunlight

What factors affect photosynthesis?

light intensity, carbon dioxide concentration and temperature.

What cell organelle is involved in cellular respiration?

mitochondria


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