Molecular Biology

Which would a diet low in carbohydrates most likely promote?

• strengthened immune system
• increased energy
• muscle growth
• weight loss

Which best describes the main component of carbohydrates?

• sugars
• proteins
• minerals
• vitamins

Which food group is most beneficial to the digestive system?

• breads
• milk and dairy
• beef, fish, and poultry
• fruits and vegetables

Which molecule, found in food, supplies the energy needed by organisms to perform life functions?

• salt
• fiber
• sugar
• water

Which molecules are most closely linked to heart disease in humans?

• fats
• nitrates
• proteins
• carbohydrates

What do cells use for energy storage and as a source of energy?

• carbohydrates
• cytoplasm
• proteins
• fats

Which statement best describes why a calcium-fortified juice would advertise that it is good for growing children?

• calcium helps the growth of bones
• calcium provides energy for growth
• children need to drink a lot of fluids
• children need calcium to prevent allergies

Which best describes how organisms obtain energy from food?

• food reacts with water to release energy
• food reacts with oxygen to release energy
• food reacts with sunlight to release energy
• food reacts with carbon dioxide to release energy

Which is necessary for a plant to convert the energy of the sun into energy it can use?

• calcium chloride
• chlorophyll
• glucose
• oxygen

Which molecule provided by plants accounts for the energy in a herbivore's diet?

• glucose
• protein
• salt
• fat