Food and Nutrition

Why do organisms need food?

• To make chemicals needed for metabolic reactions

• To provide structural support to the body

• To produce oxygen

• To remove waste products

What is metabolism?

• The intake of food

• The sum of all chemical reactions occurring in an organism

• The process of growth and repair

• The breakdown of proteins

Which of the following elements is NOT commonly found in food?

• Carbon

• Hydrogen

• Oxygen

• Silicon

What are organic compounds?

• Compounds made from inorganic elements

• Compounds that contain carbon

• Compounds found only in living organisms

• Compounds that are not essential for life

What are trace elements?

• Elements that are required in large amounts in the diet

• Elements that are not found in nature

• Elements that are only required in tiny amounts in the diet

• Elements that are toxic to living organisms

Which biomolecules are mentioned in the notes?

• Carbohydrates, lipids, proteins, vitamins

• Carbon, hydrogen, oxygen, nitrogen

• Carbohydrates, metals, minerals, vitamins

• Amino acids, glucose, fatty acids, water

What is the general ratio of carbon, hydrogen, and oxygen in carbohydrates?

• 1C : 2H : 1O

• 2C : 1H : 2O

• 2C : 2H : 2O

• 1C : 1H : 2O

Which of the following is an example of a monosaccharide?

• Starch

• Maltose

• Cellulose

• Glucose

Which type of carbohydrate is insoluble in water and not sweet tasting?

• Monosaccharide

• Polysaccharide

• Disaccharide

• Glucose

What is the role of cellulose in plants?

• Formation of chlorophyll

• Providing sweetness to fruits

• Long-term energy storage

• Strength and support in cell walls