Modified Unit 2 Exam - Matter & Energy

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy (ATP), carbon dioxide, and water. It is essential for the survival of most organisms.

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, and releasing oxygen as a byproduct.

Front

What is the chemical equation for photosynthesis?

Back

6 H2O + 6 CO2 + Light → C6H12O6 + 6 O2.

Front

What role do decomposers play in ecosystems?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem and transferring energy through cellular respiration.

Front

How does increased solar energy affect phytoplankton populations in spring?

Back

Increased solar energy typically leads to an increase in phytoplankton populations due to enhanced photosynthesis.

Front

What is the primary function of photosynthesis in the ecosystem?

Back

The primary function of photosynthesis is to convert light energy into chemical energy, providing food and oxygen for other organisms.

Front

What is the difference between photosynthesis and cellular respiration?

Back

Photosynthesis converts light energy into chemical energy (glucose), while cellular respiration converts glucose into usable energy (ATP) for cells.

Front

What is ATP and why is it important?

Back

ATP (adenosine triphosphate) is the energy currency of the cell, providing energy for various cellular processes.

Front

What is the significance of oxygen in cellular respiration?

Back

Oxygen is a key reactant in cellular respiration, allowing for the complete breakdown of glucose to produce ATP.

Front

What are the products of cellular respiration?

Back

The products of cellular respiration are carbon dioxide, water, and ATP.