LS1C - Matter and Energy Flow in Organisms

Paul Anderson explains the flow of matter and energy in organisms, emphasizing the importance of photosynthesis and cellular respiration. He discusses the basic needs of plants and animals, highlighting how energy from the sun is stored in plants and transferred through food chains. The video covers the recycling of matter and the one-way flow of energy, ultimately becoming heat. Key processes like photosynthesis and cellular respiration are introduced, with a focus on their roles in energy storage and release.

What are the two essential elements that plants need to survive?

• Minerals and vitamins

• Light and water

• Oxygen and nitrogen

• Carbon dioxide and oxygen

Which process allows plants to convert light energy into chemical energy?

• Cellular respiration

• Photosynthesis

• Fermentation

• Glycolysis

What is the primary product of photosynthesis that plants use to build their structure?

• Amino acids

• Sugars

• Lipids

• Proteins

How do animals primarily obtain energy from the food they consume?

• Via fermentation

• Through photosynthesis

• Through osmosis

• By cellular respiration

What are the byproducts of cellular respiration?

• Hydrogen and oxygen

• Oxygen and glucose

• Nitrogen and methane

• Water and carbon dioxide

In what form does energy eventually leave the ecosystem?

• As sound

• As light

• As chemical energy

• As heat

How is matter on Earth described in terms of its usage?

• It is constantly created

• It is destroyed after use

• It is used once and discarded

• It is recycled repeatedly