Energy (Section 1)

Front

What is the difference between autotrophs and heterotrophs?

Back

Autotrophs are organisms that can produce their own food using sunlight or chemical energy, while heterotrophs are organisms that cannot make their own food and must obtain energy from consuming other organisms.

Front

What is the primary source of energy for all organisms on Earth?

Back

The primary source of energy for all organisms on Earth is the Sun.

Front

What are the main products of photosynthesis?

Back

The main products of photosynthesis are oxygen and glucose.

Front

Define heterotrophs.

Back

Heterotrophs are organisms that cannot synthesize their own food and rely on other sources of organic carbon, primarily plant or animal matter.

Front

What role do autotrophs play in an ecosystem?

Back

Autotrophs serve as primary producers in an ecosystem, converting solar energy into chemical energy through photosynthesis, which is then used by heterotrophs.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What is the chemical equation for photosynthesis?

Back

The chemical equation for photosynthesis is 6CO2 + 6H2O + light energy → C6H12O6 + 6O2.

Front

Why are heterotrophs dependent on autotrophs?

Back

Heterotrophs are dependent on autotrophs because they rely on them for food and energy, as autotrophs produce organic compounds that heterotrophs consume.

Front

What are some examples of heterotrophs?

Back

Examples of heterotrophs include animals, fungi, and most bacteria.

Front

What is the significance of oxygen produced during photosynthesis?

Back

The oxygen produced during photosynthesis is essential for the survival of aerobic organisms, including humans, as it is used in cellular respiration.