Photosynthesis - Photosynthesis PostLess

What is the other substance produced by plants after exposed them to sunlight besides glucose?

• Oxygen
• Carbon dioxide
• Water
• Nitrogen

How to show that the plant produce oxygen?

• Experiment on any plant without light

• Experiment on aquatic pondweed without light

• Experiment on any plant with presence of light

• Experiment on aquatic pondweed with presence of light

Collecting bubbles from the experiment on aquatic pondweed would show high concentration of

• carbon dioxide
• nitrogen
• hydrogen
• oxygen

Choose a correct statement

• starch molecules join together in chains to form glycogen molecules

• glycogen molecules join together in chains to form starch molecules

• glucose molecules join together in chains to form starch molecules

• starch molecules join together in chains to form glucose molecules

Carbohydrate made of many sugar sub-units (glucose, fructose, galactose) is called

• oligosaccharide
• monosaccharide
• polysaccharide
• disaccharide

True or false: Starch molecules only made up of glucose molecules only

• False
• True
• Yes
• Partially true

What is the correct chemical formula for glucose?

• C₆H₁₂O₆

• C₆O₁₂H₆

• C₁₂H₆O₆

• C₆H₆O₆

Scientists have proved that the carbon elements in the glucose molecules produced from photosynthesis come from?

• Carbon dioxide in the air
• Oxygen in the atmosphere
• Nitrogen in the water
• Carbon monoxide in the air

Scientists have proved that the oxygen elements in the glucose molecules produced from photosynthesis come from?

• Water molecules (H2O)
• Sunlight
• Nitrogen gas
• Carbon dioxide

Scientists have proved that the hydrogen elements in the glucose molecules produced from photosynthesis come from?

• Water molecules

• Sunlight
• Nitrogen gas
• Carbon dioxide