Understanding Photosynthesis, Starch, and Cellulose

What is the primary function of photosynthesis in plants?

• To create proteins for growth

• To absorb water from the soil

• To convert sunlight into chemical energy

• To produce oxygen for animals

How does starch serve as an energy store for plants?

• By releasing oxygen

• By absorbing sunlight

• By forming long chains of glucose molecules

• By being converted into proteins

What process breaks down starch into glucose in the human body?

• Photosynthesis

• Fermentation

• Condensation

• Hydrolysis

What is the main difference between cellulose and starch?

• Cellulose has alternating glycosidic bonds, while starch does not

• Cellulose is soluble in water, while starch is not

• Cellulose is a protein, while starch is a carbohydrate

• Cellulose is used for energy storage, while starch is not

Why is cellulose considered a strong and waterproof material?

• Because it absorbs water

• Because it is flexible

• Because of its hydrogen bonds

• Because it is made of proteins

Which of the following is NOT a use of cellulose?

• Cotton

• Plastic

• Paper

• Rope

Why can't humans digest cellulose?

• Because it is not soluble in water

• Because it lacks nutrients

• Because it is too tough

• Because it is toxic

What enzyme do termites use to digest cellulose?

• Amylase

• Cellulase

• Protease

• Lipase

How does cellulose benefit the human digestive system?

• By providing energy

• By acting as a dietary fiber

• By absorbing vitamins

• By breaking down proteins

What is the main difference between starch and cellulose in terms of digestion?

• Starch is digested into glucose, while cellulose is not digested

• Neither is digested in the human body

• Both are digested into glucose

• Cellulose is digested into glucose, while starch is not digested