A food company converts liquid vegetable oil into solid margarine by adding hydrogen gas under high pressure with a nickel catalyst. Which chemical reaction is being applied here?

A bottle of cooking oil left open for several weeks develops a foul smell and becomes rancid.

Which chemical reaction caused this spoilage?

When a triglyceride reacts with water and an enzyme, it produces glycerol and fatty acids. However, when it reacts with NaOH instead, it produces glycerol and soap.

In the human digestive system, enzymes called lipases break down triglycerides into glycerol and fatty acids using water. What kind of chemical reaction is this?

Manufacturers add antioxidants like vitamin E to cooking oils to slow down spoilage.

Which reaction are antioxidants designed to prevent?

During a nutrition class, students are asked to categorize nutrients based on the amount needed by the body. They learn that carbohydrates, proteins, and fats are required in large amounts, while vitamins and minerals are needed in smaller quantities.

Which of the following are considered macronutrients?

A marathon runner eats a meal rich in rice and pasta before a race to boost endurance.

Which macronutrient provides the main source of energy for this activity?

A high school student frequently feels tired and pale. Blood tests show low hemoglobin levels. The doctor recommends more leafy greens and red meat.

Which micronutrient deficiency is likely responsible?

A health teacher emphasizes the importance of both macro- and micronutrients for good nutrition.

Which meal provides a balanced mix of both types of nutrients?

Carlos started eating more fast food and sugary drinks while exercising less. After a few months, he noticed significant weight gain. What type of energy balance is Carlos experiencing?

A student begins a strict diet and increases daily exercise. After several weeks, her body weight drops noticeably. What describes her energy state?

A mountain climber consumes fewer calories than usual while expending more energy during the climb. What short-term effect is most likely to occur?

During a nutrition class, students learn that carbohydrates differ in how quickly they are digested and absorbed. Which statement correctly distinguishes simple from complex carbohydrates?

Two athletes eat before training. One eats a banana and white rice; the other eats whole-grain pasta and vegetables. Who will likely have longer-lasting energy and why?

Rina decided to stop eating meat but still includes eggs and milk in her diet. She focuses on fruits, vegetables, grains, and legumes for most of her meals.

What type of special diet is Rina following?

Mark is trying to lose weight by limiting his intake of bread, rice, and sugary snacks while eating more meat, eggs, and leafy vegetables. Which type of diet is he most likely following?

A bodybuilder eats meals high in fat (avocado, nuts, meat) and very low in carbohydrates to help his body burn fat instead of sugar for energy.Which type of special diet is he practicing?

A man with high blood pressure is told to avoid processed foods, canned soups, and chips, and to cook meals with minimal salt.What is the main purpose of a low-sodium diet?

A doctor recommends a diet rich in fruits, vegetables, whole grains, and low-fat dairy to help a patient manage hypertension. Which special diet is being described?