B4 - Uses Of Glucose From Photosynthesis

What is the main sugar produced in photosynthesis?

Glucose.

What is one key use of glucose in plants?

To release energy in respiration.

Where does respiration take place in plant cells?

In the mitochondria.

Why is glucose used in respiration important for plants?

It provides energy for other processes like active transport and cell division.

When does photosynthesis produce glucose?

Only during the day (when light is present).

When does respiration happen in plants?

All the time (day and night).

How do plants store glucose for use at night?

They convert it into starch.

Why is starch a good storage molecule in plants?

It is insoluble, so it doesn't affect water movement/osmosis.

How can glucose be stored as energy-rich compounds in plants?

By converting it into fats and oils.

What are fats and oils used for in plants?

As a long-term energy store.

How is glucose used to make plant cell walls?

It is converted into cellulose.

What is cellulose used for?

To strengthen the cell walls in plant cells.

What are amino acids used for in plants?

To synthesise proteins.

How do plants make amino acids from glucose?

They combine glucose with nitrate ions absorbed from the soil.

What ions are needed to make amino acids in plants?

Nitrate ions.

List 5 main uses of glucose in plants.

respiration

stored as starch

converted to fats and oils

used to make cellulose

used to make amino acids (then protein)

Why do plants convert glucose to starch?

To store energy for when photosynthesis isn't happening (e.g. at night).

What is the function of proteins made by plants?

They are used for growth and repair.

Where do plants absorb nitrate ions from?

From the soil via active transport.