2.1 Explore Reading Quiz

Anika, Mason, and Rohan are studying different types of organisms in their biology class. They come across a type of organisms that can photosynthesize. What is the term for these organisms?

• Heterotrophs

• Producers

• Consumers

• Decomposers

Answer explanation

Producers are organisms that can photosynthesize.

Grace, Ava, and Evelyn are working on a science project about plants. They are trying to identify the main pigment in plant cells that absorbs light energy. Can you help them?

• Anthocyanins

• Carotenoids

• Phycobilins

• Chlorophyll

Answer explanation

Chlorophyll is the main pigment in plant cells that absorbs light energy.

During a science class, Daniel and Mason were discussing about plants. Daniel said that plants need oxygen and carbohydrates for photosynthesis, but Mason disagreed. He said that plants need something else for photosynthesis. Zoe, who was listening to their conversation, said that she knows the correct answer. According to Zoe, what are the reactants of photosynthesis?

• Oxygen and carbohydrates

• Glucose and water

• Carbon dioxide and water

• Sunlight and chlorophyll

Answer explanation

The correct answer is carbon dioxide and water. These are the reactants needed for photosynthesis.

Ethan, Priya, and Jackson are conducting a science experiment on plants. They noticed that when a plant undergoes photosynthesis, it releases a by-product. What is this by-product?

• Oxygen

• Glucose

• Carbon dioxide

• Water

Answer explanation

During photosynthesis, plants release oxygen as a by-product.

During a biology field trip, James, Evelyn, and Benjamin observed a pond covered in green. Their teacher explained that this green layer is due to organisms that release oxygen into the atmosphere through photosynthesis. Which organisms was the teacher referring to?

• Bacteria

• Animals

• Algae

• Fungi

Answer explanation

The green layer in the pond is due to algae, which release oxygen through photosynthesis.

Avery, Samuel, and Sophia are studying photosynthesis for their biology project. They are trying to understand the overall chemical reaction that takes place during photosynthesis. Can you help them identify the correct reaction?

• 6CO2 + 6H2O -> C6H12O6 + 6O2

• 6CO2 + 6H2O -> C6H12O6 + 6H2O

• 6CO2 + 6H2O -> C6H12O6 + 6CO2

• 6CO2 + 6H2O -> C6H12O6 + 6H2

Answer explanation

The correct reaction for photosynthesis is 6CO2 + 6H2O -> C6H12O6 + 6O2. This reaction represents the conversion of carbon dioxide and water into glucose and oxygen using sunlight as an energy source.

David, Nora, and Abigail are conducting a science experiment. They are trying to understand the process used by all cells to produce useful energy from carbohydrates. What is this process called?

• Digestion

• Photosynthesis

• Respiration

• Fermentation

Answer explanation

The process used by all cells to produce useful energy from carbohydrates is called respiration.

Benjamin, Maya, and Jackson are working on a science project about photosynthesis. They are specifically studying the light-dependent reaction. In which part of the plant cell does this reaction occur?

• Mitochondria

• Chloroplasts

• Thylakoids

• Stroma

Answer explanation

The light-dependent reaction of photosynthesis occurs in the thylakoids of the plant cell. Thylakoids are the site where light energy is converted into chemical energy.

Hannah, Abigail, and Arjun are studying for their biology exam. They come across a question about photosynthesis. They want to know the name of the series of chemical reactions that use high-energy compounds to make carbohydrate in photosynthesis. Can you help them?

• Electron transport chain

• Glycolysis

• Krebs cycle

• Calvin cycle

Answer explanation

The correct choice for the series of chemical reactions that make carbohydrate in photosynthesis is the Calvin cycle.

Isla, Aria, and Zoe are working on a science project about photosynthesis. They learned that there is a compound produced in the light-independent reaction of photosynthesis that can be used to make glucose. Can you help them identify this compound?

• ATP

• NADPH

• Glyceraldehyde-3-phosphate

• Carbon dioxide

Answer explanation

The compound produced in the light-independent reaction of photosynthesis that can be used to make glucose is Glyceraldehyde-3-phosphate.