2024: Biology Acc Exam: Biochemistry & Photosynthesis

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

Where do the carbon atoms in glucose produced during photosynthesis come from?

Back

The carbon atoms in glucose come from CO2 in the air.

Front

What are the main products of photosynthesis?

Back

The main products of photosynthesis are glucose and oxygen.

Front

What role does chlorophyll play in photosynthesis?

Back

Chlorophyll is a pigment that absorbs light energy, primarily from the sun, which is essential for the photosynthesis process.

Front

How does light intensity affect the rate of photosynthesis?

Back

Increased light intensity generally increases the rate of photosynthesis up to a certain point, after which other factors may become limiting.

Front

What is the function of NADPH in photosynthesis?

Back

NADPH acts as a short-term energy carrier, providing the reducing power needed for the conversion of carbon dioxide into glucose.

Front

What is the function of ATP in photosynthesis?

Back

ATP serves as a short-term energy carrier, supplying energy for various biochemical reactions during photosynthesis.

Front

How do lipids function for cells and organisms?

Back

Lipids primarily function to store energy, serve as structural components of cell membranes, and act as signaling molecules.

Front

What effect does a decrease in daylight hours have on photosynthesis?

Back

A decrease in daylight hours can decrease the rate of photosynthesis due to reduced light availability.

Front

How does deforestation affect carbon dioxide levels in the atmosphere?

Back

Deforestation increases carbon dioxide levels in the atmosphere due to decreased photosynthesis, which reduces the uptake of CO2.