15 Questions
What is the process called in which chemical energy powers production of carbohydrates?
chemosynthesis
Where do chemosynthetic bacteria live inside the tissues of certain types of worms and large clams?
around volcanic vents
Where do chemosynthetic bacteria live deep within Earth’s crust and in total darkness?
buried in the mud of tidal flats
What are animals, fungi, and many bacteria known as that cannot harness energy directly from the environment?
heterotrophs
What are organisms called that rely on other organisms for energy and nutrients?
consumers
What is the term for organisms that acquire energy and nutrients from other organisms?
consumers
Why are leaves low in energy and tough to digest?
because they are composed largely of cellulose
What do animals cultivate inside their guts to digest cellulose?
microorganisms
What is the role of autotrophs in energy transfer?
Autotrophs capture energy from nonliving sources and convert it into forms that living cells can use. They also store energy in ways that make it available to other organisms.
What are primary producers and why are they important?
Primary producers are organisms that are the first to produce energy-rich compounds that can be used by other organisms. They are important because all life depends on them.
What is the process of photosynthesis and what are its products?
Photosynthesis is the process by which algae and plants convert carbon dioxide and water into energy-rich carbohydrates such as sugars and starches. The products of photosynthesis are oxygen and stored carbon dioxide.
Why is photosynthesis crucial for life on Earth?
Photosynthesis produces oxygen, which is essential for organisms to breathe. Without photosynthesis, there would be no oxygen in the atmosphere.
What are some examples of primary producers in different ecosystems?
Plants are the main primary producers on land. In freshwater ecosystems, plants and algae share this role. In sunlit parts of the ocean, algae are the primary producers. Certain bacteria are important primary producers in tidal flats, salt marshes, and mangrove forests.
How do organisms obtain energy from nonliving sources?
Organisms obtain energy from nonliving sources through autotrophs, which capture and convert that energy into forms that living cells can use.
What is the source of energy when we burn fossil fuels?
When we burn fossil fuels, we are releasing energy that was captured and stored by organisms millions of years ago.
Test your knowledge about energy balance and its importance in controlling weight and maintaining a healthy lifestyle. Explore the concept of energy in different aspects of life, from food intake to exercise, and understand how energy is stored and released by the body.
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