Aerobic respiration and nutrition

Why was phenolphthalein needed in the lab experiment?

• To make the sugar mix faster in the solution.

• To make the water hotter and help the reaction.

• To clean the air bubbles inside the tube.

• To show that our breath has carbon dioxide when it changes color.

How many carbon atoms are in the products of the respiration formula?

• 1

• 6

• 12

• 2

How many oxygen molecules does aerobic respiration need to react with 1 glucose molecule?

• 3 because each half of glucose needs only a little oxygen.

• 6 because oxygen is needed to break glucose completely.

• 12 because each atom needs two oxygen molecules.

• None, because oxygen is only used in photosynthesis.

Do plants do respiration or only photosynthesis?

• Plants do both, they make food with photosynthesis and use respiration to get energy.

• Plants only photosynthesize, they don’t need energy.

• Plants use respiration only at night but not during the day.

• Plants get energy from sunlight directly, without respiration.

Glucose is the sugar used in respiration to produce energy

• No, because protein gives the energy, not glucose.

• Yes, because glucose is the main sugar from food that cells use for energy.

• Yes, because glucose helps in digestion, not in respiration.

• No, because only oxygen produces energy in the body.

The picture shows the calories in 100 g of food. How many calories are in 450 g of white rice?

• 585 calories

• 780 calories

• 625 calories

• 520 calories

What do we mean by "calories" in food?

• The weight of the food in grams

• The number of vitamins in the food

• The amount of energy the food gives us

• The time it takes to cook the food

The table shows nutrients per 100 g of food.

Based on the table, if I want the most protein but less carbs, what should I choose?

• Corn tortilla, because it has more carbs and protein together.

• Black beans, because they have good protein and moderate carbs.

• White rice, because it is low in fat but high in carbs.

• Egg, because it gives high protein with very little carbs

The table shows nutrients per 100 g of food.

For a person with obesity, which food is less recommended in high amounts?

• Black beans, because they have protein and fiber that help digestion.

• Egg, because it has protein and low carbs, which help in a healthy diet.

• Corn tortilla, because it has the highest calories and a lot of carbs that can increase weight.

• White rice, because it has less fat and moderate calories.

For a person with anemia, which nutrient should they look for in high amounts in food?

• Carbohydrates

• Iron

• Vitamin A

• Vitamin C