🤗HW27: 11.24

Front

What is photosynthesis?

Back

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

Front

What are the main products of photosynthesis?

Back

The main products of photosynthesis are glucose (a sugar) and oxygen.

Front

What role do plants play in the carbon cycle?

Back

Plants take in carbon dioxide from the atmosphere and release oxygen, thus playing a crucial role in the carbon cycle.

Front

What is passive transport?

Back

Passive transport is the movement of substances across a cell membrane without the need for energy input, often occurring through diffusion.

Front

What is diffusion?

Back

Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration.

Front

What is combustion?

Back

Combustion is a chemical reaction that occurs when a substance (usually a fossil fuel) reacts with oxygen to produce heat, light, carbon dioxide, and water.

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, buried underground for millions of years, and include coal, oil, and natural gas.

Front

How do fossil fuels impact the environment when burned?

Back

Burning fossil fuels releases carbon dioxide and other greenhouse gases into the atmosphere, contributing to climate change and air pollution.

Front

What gases enter and exit plants during photosynthesis?

Back

During photosynthesis, carbon dioxide enters the plant, and oxygen exits.

Front

What is the significance of oxygen in the photosynthesis process?

Back

Oxygen is a byproduct of photosynthesis and is essential for the survival of most living organisms, as it is used in cellular respiration.